An investment will return $125 at the end of each month for 5 years and then $250 at the end of each month for the next 3 years. What is the present value of the earnings on this investment calculated at the annual rate of 7.50% per year compounded monthly (0.625% per month)?

Real repair costs on an investment are $26225 per year growing at the inflation rate of 3%. The nominal discount rate is 6.0%. What is the present value of these costs over 8 years?