Finance App TVM with irregular cash flows

[Stefan Falk]

Hello everybody!

I am still in the process of learning the HP Prime with its overwhelming set of functionality. Up to now, I could not figure out how to calculate the loan for a bought house with additional payments. The finance app calculates well using just the monthly paid amount, but how do I calculate the plan if we pay additional amounts at different times (we are allowed to pay up to additional 5% of the total amount each year)?

Best Regards,
Stefan