Often you don't want a decimal. Seventeen sweets shared between five children: how many each, and how many left over? Python has two operators for exactly this:

// divides and throws away anything after the decimal point. It is called floor division.
% gives the remainder left over. It is called modulo (mod for short).

sweets = 17
children = 5
print("Each child gets", sweets // children)
print("Left over:", sweets % children)

17 shared by 5 is 3 each, with 2 left: 17 // 5 is 3 and 17 % 5 is 2. Together they always rebuild the original: 3 * 5 + 2 is 17.

Expression	Result	Why
`17 / 5`	`3.4`	ordinary division
`17 // 5`	`3`	whole times 5 fits into 17
`17 % 5`	`2`	what is left over