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

> 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

You’re confusing the number of times you “cut” the pizza with the number you split into.

If you want to split the pizza into 3 pieces, you have to cut it 2 times. That is division by 3.

If you split the pizza into 2 pieces, you have to cut it 1 times That is division by 2.

If you want to split the pizza into 1 piece, you do nothing because it already is 1 piece, so you “cut” 0 times. You cut 0 times when you divide by 1.

You already do nothing when you divide by 1, how do you do even less than that?