Why is 1 Divided by 0 not ∞?

Why does 1/0 not equal infinity? The reason why I'm asking is I thought 0 could fit into 1 an infinite amount of times, therefore making 1/0 infinite!!!!

Why is 1/0 Undefined instead of ∞?

Forgive me if this is a dumb question, as I don't know math alot.