8 minus k times 5 factorial. Or another way of writing this, this would be 8 times 7 times 6 times 5 times 4 times 3 times 2 times 1 over, I'll just write 3 factorial for a second, then times 5 times 4 times 3 times 2 times 1. And of course, that and that cancel out. And all you're left with is 8 times 7 times 6 over 3 factorial. And I did this for a reason. Because I want you to re-get the intuition for, at least for this part of the formula. That's essentially just saying, how many permutations, can I, you know, how many ways can I pick three things out of eight?