Find the duration of a bond with a settlement date of May 27, 2023, and maturity date November 15, 2034. The coupon rate of the bond is 7.5%, and the bond pays coupons semiannually. The bond is selling at a bond-equivalent yield to maturity of 8.5%. Use Spreadsheet 16.2. (Do not round intermediate calculations. Round your answers to 4 decimal places.)