What's modula and floor division?

Question

What's modula and floor division? Anybody?

Answer 1

By example:

>>> 19/7 # normal
2.714285714...

>>> 19//7 # floor (notice: not rounded)
2

>>> 19%7 # mod
5

Answer 2

number A can be written as B*C+D.
A//B is C (D is ignored)
A%B is D (C is ignored)