What is floor division and modulo?

Answer 1

An operator placed between two numbers, to get the remainder of the division of those numbers - Modulus

Example:
24/13 = 1.867........
24//13 = 1

// - is floor division it will give integer value

Answer 2

Floor division (//) returns the *next lower* integer:

14 // 3 = 4
14 // -3 = -5
-14 // 3 = -5
-14 // -3 = 4

Modulo (%) returns the remainder of the floor division:

14 % 3 = 2
14 % -3 = -1
-14 % 3 = 1
-14 % -3 = -2