need help please

Lisa has contributed SI .334_00 every three months for the last 12 years into an RRSP fund. The hterest earned by these deposits was 8% compounded quarterty the first 4 years and 5% quarterly for the last 8 years. How much money is cutendy the The balance is $0. (Round the final answer to the nearest cent as Round intermedate values to decanal places as needed.)