Assume that you borrow 27 million JPY from some bank and the annual interest rate is 1.2%, and repay monthly to pay off at just 20 years (=240 months) later. a) If you repay principal equally, (1) how much do you repay at the first time? (JPY) (2) how much is the total repayment in 20 years? (JPY) b) If you repay principal and interest (total) equally, (3) how much do you pay every month at least? (JPY) c) (4) If you will pay 150,000 JPY principal and interest equally, how long does it take to pay off? months