The number of options for possible arrangements in the game?

Question

Algorithms

I'm creating a game... I won't describe it yet... But I need to find out the number of possible arrangements...
The essence...
There is an 8 by 8 board (64 chess),
There are chips from 1 to 21, three each, and one chip 0 in the amount of 4 pieces ... They are randomly placed on the field ...
How to find out the number of possible arrangements in the game?

Answer 1

https://ru.wikipedia.org/wiki/%D0%9A%D0%BE%D0%BC%D...

Answer 2

C(3.64)*C(3.61)*C(3.58)*C(3.55)*C(3.52)*C(3.49)*C(3.46)*C (3.43)*C(3.40)*C(3.37)*C(3.34)*C(3.31)*C(3.28)*C(3.25)*C( 3.22)*C(3.19)*C(3.16)*C(3.13)*C(3.10)*C(3.7)
C(k,n)=n!/k !/(nk)!