7 divided by itself = 7 / 7 = 1
3 divided by itself = 3 / 3 = 1
9 divided by itself = 9 / 9 = 1
16 divided by itself = 16 / 16 = 1
It will always equal 1. Dividing anything by zero makes anything undefined, and therefore have no answer.
What is any number divided by itself (with the exception of zero)?