A debt of $15,000 with interest at 7.8%p.a compounding quarterly is to be repaid with 9 equal end-of-quarter payments. How much interest is in the final instalment? (Hint use excel: You can either: First calculate the loan outstanding at the beginning of the last quarter. The interest can then be calculated as if you were setting up a loan repayment schedule for the final quarter. Use IPMT function)