give step by step formulas

Raymond wants to invest a 3.5% annuity bond of $500,000 with interest payable monthly is to be redeemable at par in seven years. (10) a) What is the purchase price to yield 5% compounded monthly? 3 b) What is the book value after 6 years? 3 c) What is the gain or loss if the bond is sold six years after the date of purchase at 99.625 4