Assume that you borrow 25million JPY from some bank and repay under the plan of total equally payment to pay off at 30 years =360 months later. Calculate the following: Case 1: If the annual interest rate is 2.4%, the monthly common payment C satisfies (1) C Case 2: If the annual interest rate is 3.0%, the monthly common payment C satisfies (3) C Caution: Here, (1), (2), (3) and (4) should be integers