Stuck on this question. Long-term Borrowing Company (LBC) is raising new capital by selling bonds. Its investment bankers have estimated that if the company sets the coupon rate for the new bonds at 8% paid semiannually, it can sell them in the market for $1,102 per bond. The new bonds will have 15 years to maturity. The bankers have estimated that the cost of selling the new bonds will be $25 per bond. What is the companys after-tax cost of new debt for this new financing if its tax rate is 30 percent? I see in another solution that the before tax cost of debt is 7.1546%. I don't understand the calculation to get that percentage