We stopped at, we didn't go times two times one. So one way to think about what we just did is we just did five times four times three times two times one. But of course, we actually didn't do the two times one. So you could take that and you could divide by two times one. And if you did that, then this two times one would cancel with that two times one and you'd be left with five times four times three. And the whole reason I'm writing this way is that now I could write it in terms of factorial. I could write this as five factorial over two factorial.