Zero is Hero

"Zeros at the front have no value but at the end they have the most ." You are given an integer $N$ and your task is to multiply all the number from $1$ to $N$ and after the multiplication count the number of zeros at the end of result . - $Note:-$ If the result of multiplication is 5040 then the $0$ which comes after 5 will not be counted in answer as it is in the middle where as the $0$ after