WI found the real risk premium but not the nominal risk premium, please help with the nominal risk premium :(

Problem 12-10 Calculating Real Returns and Risk Premiums (LO1] You've observed the following returns on Pine Computer's stock over the past five years: 13 percent, -8 percent, 16 percent, 16 percent, and 10 percent. Suppose the average inflation rate over this period was 1.5 percent and the average T-bill rate over the period was 5 percent. 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.) b. 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.) a. Average real return 7.78% b. Average nominal risk premium 4.3%