(12C) Discounted Payback Period Program

[rajmohanpr]

Hi Joe, thanks for your hard work and for creating the payback period program. Could you please detail the steps of the example with the keystrokes sequence? ( sorry I am not getting the correct answer!)

Example - Simple payback so I =0

Initial investment 1000
Year 1 200
Year 2 300
Year 3 800
Year 4 200
Year 5 600

In this case, how do I enter the data in HP 12c?
I tried the following:
f-REG
-1000 g CFo
200 g CFj
300 g CFj
800 g CFj
200 g CFj
600 g CFj
0 i
5
R/s

I got answer 1.4 but that's not correct. Could you please advise me. i hope, for discounted payback, the only difference is with the value of i.

Thanks a lot for your efforts.