What is the most you would be willing to pay for a investment that will pay you $284 in one year, $450 in two years, and $463 in three years, if your required rate of return for this type of investment is 23.8%? What is the value today of receiving a single payment of $21486 in 9 years if your required rate of return on this investment is 8.3% compounded semi-annually? (Show your answer to the nearest cent.)