500! is divisible by 21. How many times can 21 go into 500! ?

Have zero clue how to do this. Thanks in advance!

3 answers

500!/21 times
My calculator cannot compute that complicated kind of function. And plus, 500!/21 is not a part of the multiple choices.
My calculator cannot compute that complicated kind of function. And plus, 500!/21 is not a part of the multiple choices.