You are planning to buy a parcel of land costing $$3,750,000.$ You have saved $$1250000$ as a down payment. You plan to borrow the balance from your building society at a rate of $13\mathrm{.}5\%,$ to be repaid annually over a $6-$year period. The first payment is to be made immediately

a$)$ Using Excel, compute the annual payment

b$)$ Using Excel, prepare the amortization schedule

c$)$ If you elected to pay off the balance of the loan at the end of the fourth year, how much would you have to pay?