Assume that you borrow 30million 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 = (2)
Case 2: If the annual interest rate is 3.0%, the monthly common payment C satisfies (3) < C ≤ (4)
Caution: Here, (1), (2), (3) and (4) should be integers.