Find the duration of a 8% coupon bond making annual coupon payments if it has three years until maturity and a yield to maturity of 7.3%. What is the duration if the yield to maturity is 11.3%? (Do not round intermediate calculations. Round your answers to 4 decimal places.)

Please do the problem by using math or calculator. I have to learn how to do it.

YTM Duration

7.3% YTM

11.3% YTM