Well, 365 minus 2 is 363, right? And that makes sense, because we only wanted two terms up here. So we wanted to divide by a factorial that's 2 less. And so we'd only get the highest two terms left. So this is also equal to, you could write this as 365 factorial divided by 365 minus 2 factorial. 365 minus 2 is 363 factorial. And then you just end up with those two terms, and that's that there.