I would like to know how to solve this problem correctly please

You are analyzing the after-tax cost of debt for a firm. You know that the firm's 12-year maturity. 7.50 percent semiannual coupon bonds are selling at a price of $1,000.00. These bonds are the only debt outstanding for the firm. Your Answer Correct Answer Your answer is correct What is the current YTM of the bonds? (Round final answer to 2 decimal places, e.g. 15.25%.) YTM 7.50 % e Textbook and Media Your Answer Correct Answer Your answer is correct. What is the after-tax cost of debt for this form if it has a marginal tax rate of 34 percent? (Round intermediate calculations to 4 decimal places, e.g. 1.2514 and final answer to 2 decimal places, e.g. 15.25%.) After-tax cost of debt 4.95 %