Please make sure the answer is right please, need A and B

Avicorp has a $10.8 million debt issue outstanding, with a 6.2% coupon rate. The debt has semi-annual coupons, the next coupon is due in six months, and the debt matures in five years. It is currently priced at 96% of par value. a. What is Avicorp's pre-tax cost of debt? b. If Avicorp faces a 40% tax rate, what is its after-tax cost of debt? a. The pre-tax cost of debt is _____ % per year. (Round to four decimal places.) b. If Avicorp faces a 40% tax rate, the after-tax cost of debt is _____ %.(Round to four decimal places.)