You received $250 for your 18th birthday. You immediately invest in an index fund that has an average annual rate of return of 12.4% compounded monthly. You contribute $25 a month for the 1st ten years of your investment. You contribute $250 a month for the next twelve years. For the last twenty-five years you contribute $1,500 per month. What is the value of your investment on your 65th birthday?