Micro Spinoffs Inc. issued 20-year debt a year ago at par value with a coupon rate of 6%, paid annually. Today, the debt is selling at $1,130. If the firms tax bracket is 30%, what is its percentage after-tax cost of debt? Assume a face value of $1,000. (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.)

After-tax cost of debt ________%