Suppose you have just signed a professional contract to play cricket in Argentina. The contract is for 4 years and is as follows. You get an immediate signing bonus of $280,000, followed by four years of quarterly payments of $75,000. Finally, you will receive a lump sum payment of $350,000 at the completion of the contract.

You plan to invest half of your signing bonus and 20% of all other payments in an account that earns 7.5%, compounded quarterly. Given this, and assuming no other payments, how much would you have cumulatively in the account at the end of 20 years?

Also need help with this do not understand it. thanks in advance