He pulled Lin Dagua to the side with a nervous look on his face and lowered his voice: "Brother, what happened?"

Lin Dagua was a little uncomfortable when his younger brother looked at him with strange eyes. He said awkwardly: "Nothing happened, but you are not allowed to be unreasonable to mother again. Do you remember that?"

"That woman, what kind of ecstasy did she pour into you, brother?" Lin Ergua felt that his brother had lost his mind, and he was so sad and heartbroken.

Lin Dagua held his forehead and sighed: "She has gotten better, haven't you seen it?"

"But what if it's just pretending?"

"Then you hope she's faking it?"

Ergua shook his head, suddenly thought of something, and smiled slyly at his elder brother, with a look that looked like you are so cunning.

Lin Dagua looked at him like this and knew that his thoughts were wandering to nowhere.

I don't bother to waste words anymore, as time goes by I see people's hearts. Although the second brother is a mess and sometimes out of tune, he is also a very filial child.

"You two, stop whispering and come over here."

This time, Lin Ergua finally gave Ding Xiang a good look and even called her mother in a serious manner.

Ding Xiang glanced at her eldest son with a surprised look on her face, "Good boy, what kind of words did he just say? How could he conquer the tough guy in the family so easily?"

"Okay, while everyone is here, today I'm going to test you on an arithmetic question."

Ding Xiang saw that after she finished speaking, the children became nervous, and quickly comforted them: "It's very simple, don't be nervous."

"Last night we made three hundred donkey rolls and fifty Dingsheng cakes.

Dingsheng cakes cost four cents each, and Donkey Rolling cakes cost four cents each, but we did a small activity, that is, buy three and get one free, buy five and get two free, and buy seven and get three free.

So, if all the pastries are sold out, what is our gross profit approximately?"

"..." The four children were confused.

After listening to Ding Xiang's series of statements, Lin Dagua felt like his brain was in knots.

Suddenly, he felt that doing business was so difficult. Was it too late for him to give up now?

Er Gua's wooden head is even more incomprehensible, with a look of constipation on his face.

Sangua frowned tightly, and after thinking for a long time, he shook his head.

As for Pearl, she frankly said that she didn't know and was unwilling to continue to use her brain.

"What's there to count? Can't you just pour out today's copper coins and count them?" Ergua couldn't help but said when he saw everyone looking distressed.

He just felt that his mother was just looking for trouble, and he would know the answer by counting them one by one.

"It's not much now, I can still count them one by one, but if there are tens of thousands of copper coins, why don't you still count them one by one?" Ding Xiang looked at Lin Ergua with a smile.

"Tens of thousands, how could there be so many?" Ergua thought that his mother was crazy and wanted money like crazy.

Ding Xiang didn't waste any time and started explaining directly: "The rolling donkey costs four cents each. If you buy three and get one free, four will cost you twelve cents, which is three cents each. If you buy five and get two free, seven will cost you.

It costs 20 cents, so one is 2.8 cents, which is less than three cents. Buy seven and get three free, that is, ten of them cost 28 cents, so one is 2.8 cents, which is less than three cents. Let’s count him as 2.8

If you get one article, if you get 300 articles, it will be 840 articles. The gross profit of Donkey Rolling should be around this. Adding in the 200 articles of Fortune Cake, the gross profit in one day is one tael of silver and forty copper plates."

"In this case, does it count as coming out?" Lin Ergua looked unbelieving.

Can it be calculated without counting one by one?

Lin Dagua and Lin Sangua also thought it was amazing that they could figure it out casually without abacus. Is this true or false?

Ding Xiang smiled and said: "If you don't believe it, you will know after counting."

The three brothers quickly took out their money bags, walked quickly to the main room, and poured a whole bag of copper coins on the table.

Good guy, more than a thousand copper plates fell down, and the crisp sound was so nice.

When Li Zhuzhen saw it, her eyes slowly opened wide.

A lot of money, really a lot of money. She had never seen so much money in her life.

The three brothers divided the work and soon came up with the copper coins. When added together, the result was one thousand and fifty cents, which was only ten cents different from Lilac's calculation.

"Mom, what kind of arithmetic is this? I also want to learn it." Lin Sangua looked thirsty for knowledge.

Lin Dagua also walked up to Ding Xiang silently. He would learn business from his mother in the future, so he would naturally have to learn arithmetic.

Only Lin Ergua didn't want to learn at all. He would rather work in the fields than read and write.

How cool it is to sweat!

"This is mental arithmetic, as well as written arithmetic. I will teach you all of them later."

As for those equations, Ding Xiang thought about it and forget it, they were too deep.
Chapter completed!