Use Excel. Please show steps and calculations. 6. Nicholas takes a loan of $400,000 with an annual interest rate of 7% compounded quarterly. His payments are due quarterly over a five-year period, at the end of each period. a. What is his quarterly payment? b. Prepare an amortization table that should list the remaining principal, payment towards principal, and payment towards interest for all twenty quarters in the loan period. (Hint: Use the PPMT and IPMT formulas.)