Using EXCEL: Design a amortization schedule to answer the following questions for a $600,000 15-year PLAM loan that is fully-amortizing. The contract interest rate is 5.4% with monthly payments. The inflation rate is 7% for the first 5 years, 6% for years 6 to 10, and 5% for the final 5 years. There are no upfront origination fees, points, or prepayment penalties.