How to solve >>> 20 // 6

Answer 1

this is floor division like this.
______
6| 20 |3
18
______
2

floor answer is 3.

Answer 2

">>>" is the shell prompt in Python IDLE. It is not a part of equation or an operator.
Omit it and solve what is left:
20//6
this is a floor devision. And result is 3

Answer 3

20 / 6 = 3
3 * 6 = 18
20 - 18 = 2, your answer