8. In order to pay off a debt that he took out today, Roger will have to make a payment of $3,500 in 15 months and $5,500 in 36 months. The interest rate is 8% compounded quarterly. What is the total amount of interest that is included in these payments?

8. In order to pay off a debt that he took out today, Roger will have to make a payment of $3,500 in 15 months and $5,500 in 36 months. The interest rate is 8% compounded quarterly. What is the total amount of interest that is included in these payments