Treasury bills are currently paying $5$ percent and the inflation rate is $3\mathrm{.}2$ percent.

a$.$ What is the approximate real rate of interest? $($Enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ What is the exact real rate? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

$\backslash$table$[[$a$.$ Approximate real rate,$1\%$