help full answers plz!

Suppose you make deposits of $350 at the end of every six months for four years into an account earning 2.29% compounded semiannually. After these four years you leave the money in the account, without making additional deposits for another seventeen years invested at the same interest rate of 2.29% compounded semiannually. How much will you have in the account after the first four years? (Round to the nearest cent.) How much will you have in the account after the entire twenty-one years? (Round to the nearest cent)