At the first tri-city meeting, there are 8 people from town A, 7 people from town B, and 5 people from town C.

At the first tri-city meeting, there are 8 people from town A, 7 people from town B, and 5 people from town C. If a council consisting of 5 people is randomly selected, find the probability that 3 are from town A and 2 are from town B. How would I show my work on this equation?