Please need help with this question

You've observed the following returns on Crash-n-Burn Computer's stock over the past five years: 15 percent, -6 percent, 18 percent, 14 percent, and 10 percent. Suppose the average inflation rate over this period was 1.7 percent and the average T-bill rate over the period was 5.2 percent. olnts a. What was the average real return on the company's stock? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) What was the average nominal risk premium on the company's stock? (Do not round intermediate calculations and enter your answer as a percent rounded to 1 decimal place, e.g., 32.1.) Print References Average real return b. Average nominal risk premium