Hi. Can anyone please help with this? No one has gotten it correct yet. Thank you!

You've observed the following returns on Doyscher Corporation's stock over the past five years: -25.5 percent, 14.0 percent, 31.0 percent, 2.5 percent, and 21.5 percent. The average inflation rate over this period was 3.25 percent and the average T-bill rate over the period was 4.3 percent. Required: (a) What was the average real return on the stock? Average real return % (b) What was the average nominal risk premium on the stock? Average nominal risk premium %