You$$ve observed the following returns on Yamauchi Corporation$$s stock over the past five years: $28\mathrm{.}2$ percent, $15\mathrm{.}8$ percent, $34\mathrm{.}6$ percent, $3\mathrm{.}4$ percent, and $22\mathrm{.}4$ percent. The average inflation rate over this period was $3\mathrm{.}34$ percent and the average T$-$bill rate over the period was $4\mathrm{.}3$ percent.

a$.$ What was the average real return on the stock? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ What was the average nominal risk premium on the stock?