Yes, 66 plus 264 is 330. So the key realization here is, what he's saying he found was very interesting. Rainy days and his mom being grouchy were entirely independent events. That means that the probability of his mom being grouchy, it shouldn't matter whether it's raining or not. It should just be, it should be the same probability of whether it's raining or not. And our best estimate of the probability of his mom being grouchy is on the total days is 20%. And so if the data is backing up that it's independent events, then the best way to fill this out would be the probability of his mom being grouchy on a rainy day or a not rainy day should be the same.