What's the use of this knowledge in our life?

Very useful, division is the inverse operation of multiplication, and it is a more complicated arithmetic method than addition and subtraction. When addition and subtraction can't be counted, multiplication and division will be used.

In life, as long as the calculation and division related to integers are a dime a dozen.

Company bonuses should be paid per head.

Comics are 0.0 1 sec per frame, and an animation lasts for 20 minutes. How many frames are there?

To buy stocks, you need to divide how many hands you can buy at how much money you spend, and how much you earn and lose later.

Constellation fortune-telling game, hehe, I've seen it, too. Division is very simple.

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