Ashburn Corp. issued 25-year bonds two years ago at a coupon rate of 5.6 percent. The bonds make semiannual payments. If these bonds currently sell for 97 percent of par value, what is the YTM? Input area: (Use cells A6 to B11 from the given information to complete this question. You must use the built-in Excel function to answer this question. Leave the "Basis" input blank in the function.)