Tristan buys a bag of cookies that contains 7 chocolate chip cookies, 13 peanut butter cookies, 3 sugar cookies and 2 oatmeal cookies.

Tristan buys a bag of cookies that contains 7 chocolate chip cookies, 13 peanut butter cookies, 3 sugar cookies and 2 oatmeal cookies.

What is the probability that Tristan reaches in the bag and randomly selects a peanut butter cookie from the bag, eats it, then reaches back in the bag and randomly selects a chocolate chip cookie?

Enter answer as decimal rounded to 4 places if necessary.