I need the steps from beginning to end so that I can explain it to someone else also pay attention to the second part it says 5 of them not 6

Exercises 6.2: The Binomial Distribution - Google Chrome prod.reader-ui.prod.mheducation.com/epub/sn_98070/data-uuid-0e46dfd31e094105602f0e1301573128 94 of 645 38. Big babies: The Centers for Disease Control and Prevention reports that 25% of baby boys 6-8 months old in the United States weigh more than 20 pounds. A sample of 16 babies is studied. a. What is the probability that exactly 5 of them weigh more than 20 pounds