Multiplication by 0 as well as division does not make sense because it always comes out 0. Sometimes it also causes us to get bad results.
I will prove to you that 2 + 2 = 5
Let's start with this:
0 = 0
zero = zero (this is true)
Now let's give another example
16-12-4 = 20-15-5 (after calculating, we also get 0 = 0)
4(4-3-1) = 5 (4-3-1) (we have drawn 4 and 5 before the parenthesis, but the same goes the same)
4(4-3-1) = 5 (4-3-1) (now we shorten)
4=5 or the same as 2 + 2 = 5
Why did this happen?
Because
4 (4-3-1) = 5 (4-3-1) /: (4-3-1) is the same as 4 (4-3-1) = 5 (4-3-1) /: 0
4 = 5
Of course, 2 + 2 = 5 is a wrong equation, and it came out to us because multiplying and dividing by zero yields erroneous results. Therefore, we never divide and multiply by zero.