THIS WILL CALCULATE: If you have an investment that will pay in equal periodic installments and you want to determine how much to pay for it to earn a desired return.

EXAMPLE: I would like to borrow some money from you today. I can pay you back in equal monthly installments of $450 for 3 years. How much will you be willing to loan me if you get a 12% rate of return.

Please note:  The result is a negative number because it is a cash outlay.