Zhao Ce sent Zhu Houzhao away and returned to the hall.

Su Caier was finishing her plate with a look at the plate next to her.

Zhao Ce didn't love these sweet cakes and so on, so there were still a lot left on the plate.

Hearing Zhao Ce's footsteps, Su Caier quickly retracted her eyes and looked at him.

Zhao Ce came over, Su Caier pulled him and asked in a low voice: "Husband, are you unable to finish your cake?"

Zhao Ce said hilariously: "Yes."

"How about Cai'er, you can help me eat it, so as not to waste it?"

Su Caier said happily: "Okay!"

After saying that, he brought the plate over.

Seeing the little girl stuttering, Zhao Ce poked her cheek.

"If it's not enough, there should be more in the kitchen. You can eat more of this, it's okay."

Su Caier nodded hurriedly and said sweetly: "Thank you, my husband!"

However, after eating the plates, she didn't ask for it anymore and directly asked someone to clean up the table.

She thought of eating the rest later.

After touching his pretty full belly, Su Caier let out a gentle breath with satisfaction.

Thinking of what his husband and Mr. Zhu just said, Su Caier looked at him curiously.

"Husband, I think the number of people you just told Mr. Zhu is a bit strange."

Zhao Ce could not have imagined that the little girl had already heard the inappropriate point, "Oh?"

"Cai'er thinks there is something strange about it?"

Su Caier said: "In 20 years, people will increase by five times, but if there are dead people, it seems that this is not counted?"

At first, Su Caier listened to her husband counting like this, and she felt that she admired her husband's quick mental arithmetic skills.

However, as she listened, she heard the disadvantages.

My husband calculated the numbers correctly, but there seems to be something wrong.

What she just proposed was one of them.

"Besides, if some of them have many children and good fortunes, or have foreign populations, should they be included?"

Zhao Cezan said: "Yes, you saw the problem."

"This is a quantitative deduction process."

"This deduction is actually the result of mechanical deduction without considering all factors."

"So, this result can only be used as a reference."

Quantitative deduction...

When Su Caier listened to this word she had never heard before, she felt very high-end.

However, after her husband explained this, she suddenly realized.

"Yes, I heard from my uncle that there have always been so many families in our Shuiqiao Village."

"The population in the village has not changed much over the years."

Zhao Ce smiled: "Yes."

"Someone comes and some people leave, so the number of people has remained stable."

"However, once there is an opportunity, the population will gradually increase."

"An opportunity?"

Su Caier had a flash of inspiration.

"Is it the sweet potatoes that my husband took back before?"

"My husband said this is a high-yield crop and it was taken back to Shuiqiao Village last year and planted it."

"Maybe after the beginning of spring, Brother Wensheng will send it to us?"

Zhao Ce almost forgot about this, and he didn't expect the little girl to remember it.

People say that one pregnancy is stupid for three years.

After his little wife got pregnant, she became more sensitive because of her emotions. Unexpectedly, she became smarter?

"So smart!"

"When the sweet potatoes arrive next year, I will study some delicious food for you."

Su Caier subconsciously licked her little mouth and cheered happily.

"Okay, okay!"

but......

Thinking of the thoughts that Mr. Zhu had been so full of his heart before leaving, Su Caier couldn't help but blink.

"Husband, Mr. Zhu seems to be very confused after hearing your words today."

"Do we want to tell him this? There are disadvantages in quantitative deduction?"

Zhao Ce shook his head.

"He is a smart person and should understand it himself."

"If you can't understand it thoroughly, Master Zhu will help him figure it out."

"When he thinks it through, he comes to me and I can talk to him about the Coal Mountain."

Su Caier remembered Mr. Zhu's wise look and couldn't help but lit her little head.

......

Inside the East Palace at this time.

Zhu Houzhao hugged in the study room with a rare opportunity.

He held a brush in his hand, and the table and the floor were filled with messy paper.

Next to his left hand, there is a copy of the "Basic Mathematics" written by Zhao Ce.

Zhu Houzhao's eyes were covered with blood, but she was still lowering her head and calculating hard.

On the carriage, after hearing Liu Jin's words, he remembered the accounts that Zhao Ce had just settled for him, and he suddenly woke up.

So as soon as he came back, he asked Liu Jin to search for the numbers, and he directly dug his head in the study.

“Twelve Three Thousand Five Hundreds…”

"Twenty years later, half a million...one million..."

For a prince who has never liked to study since childhood.

If it were the past, such a long number would definitely not be able to calculate it.

There is nothing else, His Royal Highness felt that learning to make plans was too boring.

However, a while ago, he was forced by his father to finish learning the arithmetic book compiled by Zhao Ce.

Therefore, he is now barely acquainted with vertical calculations.

It’s just that this number is too long that he doesn’t know how to memorize the table of the Nine-Nine Multiplication.

Therefore, I can only read the book while counting.

This way, I can only calculate it.

But the number he calculated is getting more and more shocked.

By the end, the sky had become completely dark.

Liu Jin was outside the study, anxiously looking at him from time to time.

Qian Ning came here just now and brought a lot of fresh things.

However, Zhu Houzhao issued an order, asking no one to disturb him.

Liu Jin had no choice but to let him leave first.

But it’s dark, why haven’t the Crown Prince come out yet?

Just now, he was at Yongxibo's house. Because Li Dongyang was there, Liu Jin only waited for instructions at the door.

He could only hear some of the conversations in the room intermittently, and he didn't understand them at all.

What did Yongxibo tell His Highness the Crown Prince that he would lock himself in the room as soon as he came back?

Liu Jin was anxiously thinking about knocking on the door and letting His Royal Highness rest.

The door of the study room over there was opened from the inside with a "swish".
To be continued...