People take for granted that the answer is 1. Actually showing that is not easy. You could do it on a calculator.
10
รท
10
=
The answer is 1
10x = 10 Divide by 10
10x/10 = 10/10
x = 1
Rule: Anything divided by itself always equals 1.
0/0 is the lone exception. For that you have to read your notes to see what you've been told.