Eli5 why is a number divided by zero undefined?

Question

Example I have a pizza I cut it into zero pieces shouldnt it be still one whole pizza?
Since I didn’t cut it so it’s still whole

In: 0

Answer 1

You can’t cut a pizza into ZERO pieces. If you don’t cut a pizza you have ONE piece.

Division by zero is undefined, because it leads to contradictions. You make 1/0 equal just about whatever you want and that makes it useless as a problem solving tool.