Jiminy$$s Cricket Farm issued a $30-$year, $4$ percent semiannual coupon bond $2$ years ago. The bond currently sells for $107$ percent of its face value. The company$$s tax rate is $21$ percent. The book value of the debt issue is $$60$ million. In addition, the company has a second debt issue, a zero coupon bond with $10$ years left to maturity; the book value of this issue is $$35$ million, and the bonds sell for $76$ percent of par. c$.$ What is the aftertax cost of debt? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$