And we want to divide that into all of the possibilities. Or maybe I should write it this way. The total number of hands that I can get. So the numerator in blue is the number of hands, or the number of different hands, where I have the four ones, and we're dividing it to divide the total number of hands. Now let's figure out the total number of hands first, because at some level this might be more intuitive, and we've actually done this before. Now, the total number of hands, we're picking nine cards, and we're picking them from a set of 36 unique cards. And we've done this many, many times.