Yep, that all works out. And we're going to evaluate this at 1 and at 0. And lucky for us, when you evaluate at 0, this whole thing turns out to be 0. So this is all going to be equal to pi times evaluating all this business at 1. So that's going to be 1 fifth minus 4 thirds. I'll do that in green color, minus 4 thirds minus 1 half. So whenever you evaluate at 1, it's just going to be.