A diner has 20 desserts: 7 are slices of pie, 5 are pieces of cake, 8 are bowls of pudding. Jacobi wants to select two to eat. The first dessert will be selected at random, and then the send will be chosen from the remaining dessert. What is the probability that the two desserts select are slices of pie? Do not round your intermediate computations. Round your final answer to 3 decimal places