Isaiah is in his 50s and currently does not have a retirement fund. However, he recently read a few articles about the insufficient savings of people in retirement and, as a result, he decides he wants to start now. He saves $500 per month for 15 years and earns 7% by investing in the stock market* through an index fund.

1. How much of the total did Isaiah contribute himself?

2. How much money did Isaiah make through compounded returns in this investment account?