P, n, i, A
Note: All formulas here are derived in details in the User's Manual.
Payment Formula: get monthly payment A from Loan Amount P, Interest Rate i, and Loan Period n.
Loan Formula: get P from A, i, and n.
Period Formula: get n from A, i, and P.
Principal Paid Formula: get PPn (Principal Paid at n) from A, i, and Po (Initial Principal).
NPV/FV Formula: get NPV/FV (Net Present Value/Future Value) from CFj (Cash Flows), and i (Discount Rate).