Jiminy's Cricket Farm issued a $20-$year, $6$ percent semiannual bond $4$ years ago. The bond currently sells for $91$ percent of its face value. The company's tax rate is $23$ percent.

a$.$ What is the pretax cost of debt?

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

b$.$ What is the aftertax cost of debt?

Note: 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$.$ Pretax cost of debt,$\%$