Xiao Rui thought for a moment. If he wrote it in too detail, wouldn't it be a little challenging? Will it make Mr. Feng feel that he is looking down on others? People also stationed troops in Lingnan to fight, and they knew a lot of common sense.
Therefore, Xiao Rui only gave simple data such as the number of combatants, number of combat days, number of casualties, pension standards, and merit recording standards.
When Feng Zhidai took a look at it, he immediately laughed, "Isn't it said that the calculation is very heavy? With this little thing, it doesn't take long to calculate at all. Let alone a class, I can calculate it clearly in a quarter of an hour."
Zhao Deyan reminded: "Don't brag. It's useless to calculate quickly. You still have to make these people understand."
Feng Zhidai made an OK gesture and then started speaking.
Xiao Rui was dumbfounded and turned to look at Zhao Deyan, "When did this guy learn this gesture?"
Zhao Deyan said with a smile: "You don't know, this guy takes you as his idol. Not only do you have to learn calligraphy, painting, and arithmetic, he even learned a lot about your usual tone of voice and gestures."
Xiao Rui couldn't laugh or cry, "Then do you know what my gesture means?"
"Don't you just mean to be reassured and have no problem?" Zhao Deyan replied lightly.
"Then why does this gesture convey this meaning?"
Forehead……
Zhao Deyan couldn't answer this question.
He shook his head, "Didn't you say that? Besides, everyone is used to it, as long as they understand what you mean."
Here……
"Hurry up and listen to the class. Let's see if the teaching level of this great talent Feng is enough to be a math teacher."
Feng Zhidai glanced at all the students with a smile. The oldest among them was Fang Yiai, and the youngest was Princess Changle. Oh, by the way, Xiao Rui's son Xiaopingan was not included.
Then this 'accurate' arithmetic gentleman puffed up his chest confidently and said to these people, as long as they know that one plus one equals two, I guarantee that I can explain it clearly to them.
"Everyone's survival is nothing more than four things: food, clothing, and housing. Army warfare means gathering a large number of people together to fight. At the same time, the court is responsible for paying for their food, clothing, and housing expenses..."
Zhao Deyan nodded, "Yes, the outline is clear. He is a teacher material."
Xiao Rui also laughed, thinking that I had found the right person. If I told Xiao Changle, she might think I was lying to her.
Just listen to Feng Zhidai continue to preach: "The soldiers and horses have to go ahead with food and grass. The biggest cost in a war is food and grass. That is, food. This can be divided into food for people and food for horses and livestock. Livestock includes war horses, mules and horses. wait."
"In the last war, a rough calculation showed that the Tang Dynasty invested 200,000 people and 100,000 livestock. So how much food and grass do we need to prepare?"
"We can calculate it like this, first calculate how much food a person eats in a day. At the current price of food, one penny can buy two sesame cakes. An adult can eat two at a meal and drink some soup. The army is marching, Two meals a day per person.”
"If you calculate it this way, then one person costs two cents a day. How much does it cost to feed an army of 200,000 people a day?"
…
Hearing this, Xiao Rui and Zhao Deyan were dumbfounded at the same time, and looked at each other, dumbfounded.
Is this guy really the fifth most talented young master of the Feng family in the world? Are you sure you are not a pampered playboy who has never left home?
Zhao Deyan held down Xiao Rui who was about to interrupt him and said in a low voice: "Listen to what he has to say. This is an assessment for recruiting teachers. How can we not let him finish speaking?"
Xiao Rui covered his eyes and thought to himself, if he made a mistake in calculation and Xiao Changle misunderstood, how could I correct it?
He turned around and looked at all the students attending the lecture. They all nodded in agreement. There was nothing wrong with the calculation. One person would definitely be full if he ate two sesame cakes at a meal. Spending two pennies on food a day was enough.
"So, how much does it cost to feed an army of 200,000 people a day? That's 200,000 taels, or 400,000 coins!"
"How much is this? According to the ratio of copper coins and silver set by the government, one tael of silver is worth a thousand copper coins, and how many taels of silver is 400,000 yuan? Who will calculate it?"
Good guy, this is really material for a teacher, and he still knows how to mobilize student interaction?
Zhao Deyan had already begun to praise in a low voice, and Xiao Rui's face turned darker.
Li Chengqian raised his hands and stood up, "I'll do the math."
After saying that, he found the counter in the school and muttered as he fiddled with it: "One thousand fen is one tael, ten thousand fen is ten taels, one hundred thousand fen is one hundred taels, and four hundred thousand fen is, that is, four hundred taels." !”
"Sir, I've calculated it. Four hundred thousand yuan is a total of four hundred taels of silver."
Feng Zhidai smiled and praised: "Yes, the calculation is correct. In other words, a 200,000-strong army needs four hundred taels of silver to eat a day."
Fang Yiai murmured: "Awesome, I can count so fast. I just counted ten taels."
Pfft... Is this even mindless boasting? Xiao Rui wanted to vomit blood.
Feng Zhidai continued: "Then let's calculate the food and drink of livestock. I don't know how much a meal of grain and grass costs. But what we know is that livestock must not eat as well as humans because grain is more expensive than grass. So. Let’s make a rough estimate. According to an animal, the cost of eating and drinking for a day is half that of a human being, which means a mule and horse cost one penny a day.”
"Then using the same calculation method, how much does it cost to feed and drink one hundred thousand mules and horses a day? One hundred taels! Right?"
Yang Zhengdao, Li Chengqian and Xiao Changle shouted: "Yes, one hundred taels."
Niu Xiaohu was still calculating, but Fang Yiai was completely stuck, "What about that, sir, can you calculate it in detail?"
Forehead……
"Haha, it doesn't matter. Let's calculate it carefully." Feng Zhidai kept in mind his original promise and needed every student to understand it, so he patiently recalculated it himself.
It wasn't until Fang Yiai smiled and nodded that he understood, that he continued to speak.
"Okay, now we have 200,000 troops and 100,000 mules and horses. How much does it cost to eat in one day? Four hundred taels plus one hundred taels, that is, five hundred taels."
"So, the last war lasted a hundred days. How much did it cost in total? That's one hundred and five hundred taels. Who is going to calculate how much it cost?"
Xiao Changle raised his hands excitedly, "I'll do it, I'll do it. This is easy to calculate, five hundred taels times one hundred, it's very simple, fifty thousand taels!"
Feng Zhidai praised: "What a smart little princess, she can actually calculate verbally. Yes, it is exactly fifty thousand taels."
"That is to say, in the last war, the money spent on food and grass was fifty thousand taels of silver."
"After calculating the food and grass, what's next? Food, clothing and shelter. It's time to dress and stay..."
Feng Zhidai's eloquent narrations were all listened to with great interest by the students.
Xiao Rui and Zhao Deyan seemed to have been refreshed. Zhao Deyan asked in a low voice: "Master Hou, I know how much the Turks spent last time. How much did it cost in the Tang Dynasty? Don't talk about anything else, just food and grass."
"How much?" Xiao Rui said with a dark face: "If the emperor believed him to settle accounts like this, he would probably dare to start a war with four Turks at the same time."
Four? That's 200,000 taels? Zhao Deyan sighed and said, the Turks are similar.
Xiao Rui held out three fingers and said, "No, but for food and grass, we spent three hundred thousand taels! Is this the math teacher you found for me? Is he at this level?"
Forehead……
Zhao Deyan blushed, lowered his voice and explained: "If we just talk about math, he didn't make any mistakes. He just doesn't know much about military affairs and reality."
so what? How do you want to quibble?
"So, he is only suitable to be a math teacher and not suitable to serve in the army as a counselor." Zhao Deyan spread his hands.
Xiao Rui:......
Nothing seems wrong!
