how to calculate discounted payback period using HP12

cost: %5000 cash flow: year 1: 3000 year 2: 2000 year 3: 2000 rate of return: 10%

I don’t think there is a way…

wow no DPP on hp12c? I can imagine that would be a pain to calculate…easily a 1 minute question can turn into 3-4 minutes. BAII just few clicks on the calculator