Well, here we could just go back to our numbers right over here. Probability of A, that's going to be one over six. Let me do that in a magenta color. I like to keep my colors, be careful about my colors. That's 1 6th times probability of B given A. So probability of B given A is 1 4th right over here, times 1 4th, which is, curious enough, 1 24th. 1 24th.