You've observed the following returns on Pine Computer's stock over the past five years: $18$ percent, $-14$ percent, $20$ percent, $22$ percent, and $10$ percent. Suppose the average inflation rate over this period was $3\mathrm{.}1$ percent and the average $T-$bill rate over the period was $4\mathrm{.}4$ percent.

a$.$ What was the average real risk$-$free rate over this time period?

b$.$ What was the average real risk premium?

Note: For all requirements, do not round intermediate calculations and enter your answers as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

$\backslash$table$[[$a$.$ Average real risk$-$free rate,$\%$