need help!

You've observed the following returns on Pine Computer's stock over the past five years: 27 percent, 15 percent, 33 percent, 3 percent, and 22 percent. The average inflation rate over this period was 3.30 percent and the average T-bill rate over the period was 4.3 percent. a. What was the average real return on the stock? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. b. What was the average nominal risk premium on the stock? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16