 And if it's odd, you multiply it by 3 and add 1. That's the game. So whatever pops out... Yeah, it's a game. So if you take a number, if it's even, you divide it by 2. Okay. If it's odd, you multiply it by 3 and add 1. And then you do it again. So whatever number pops out, if that number is even, you divide it by 2 again.