Why is the integer division of Python accurate???

In Python, there are two types of division, one of which is / :

>>> 10 / 3

3.3333333333333335

/The division evaluates to a floating-point number, even if it is exactly divisible by two integers, and the result is a floating-point number:

>>> 9 / 33.0

There is also a division that is // called a floor divide, where the division of two integers is still an integer:

>>> 10 // 3

3

You are not mistaken, the whole number of floors apart // is always an integer, even if not endless.

To do the exact division, you / can use it. Because // division takes only the integer part of the result.

Python also provides a remainder operation that can be used to divide the remainder of two integers:

>>> 10 % 31

The result is always an integer, regardless of whether the integer // divides or takes the remainder, so the result of the integer operation is always accurate.

Why is the integer division of Python accurate???