Find the accumulated value of $2480 at the end of 12 years if the nominal interest rate was 2% convertible monthly for the first 3 years, nominal rate of discount was 3% convertible semiannually for the next 2 years, the nominal rate of interest was 4.2% convertible once every 2 years for the next 4 years, and the annual effective rate of discount was 0.058 for the last 3 years. The answer at the end of the book is $3932.32