Hopefully someone can help me with a formula that appears to be reasonably simple to figure out, for any experienced HP user. I'm just not all that savvy when it comes to creating formulas.

Anyone familiar with the HP 19B calculator probably knows the formula below is the one used to solve for Present Value and loan calculations in leasing and loans.

ADV:PMT=(-PV-FV*(SPPV(I%YR/12:N)))/(USPV(I%YR/12:N-#ADV)+#ADV)

My goal is to simply add one simple step to the formula (or create another one if need be) to add "Annual Debt Service (ADS)calculation. In other words, once a payment is caluclated, I'd like to be able to have the calculator compute the payment AND multply by 12, which equals the ADS (Annual Debt Servive). This is a common component in real estate investment comparisions when analyzing the projected cash flow.

Thank you for your assistance.

Barry