Kindly show me workings to get to 9.077% and 8.793% and not from excel

7. Consider the following bond: Coupon rate = 11% Maturity 18 years Par value $1,000 First par call in 13 years Only put date in five years and putable at par value Suppose that the market price for this bond $1,169. (a) Show that the yield to maturity for this bond is 9.077% (b) Show that the yield to first par call is 8.793%. (par call means the call price is $1000)