Add a new field named Loan Payment using the Expression Builder. Insert the PMT function to determine the monthly payment for a 2-year loan, paid monthly, with a 5% yearly interest rate. The present value is 25000 minus the savings balance. For example, if the purchase price were 25000, with 5000 in savings to put toward the purchase, your present value would be 20000. Ensure the number displays as a positive number.