Looking for TVM contributions

[dm319]

I've run out of TVM calculators.

Those of you who have calculators with TVM solvers, I'd be grateful if you could solve some TVM puzzles for me and see what results you are getting*.

The puzzles can be found here. Some of them require a bit more explanation (i.e. puzzle 2 is from here, and puzzle 4 requires inputting the PMT back in to then solving for i).

I'm particularly curious about other HP financial calculators from the HP-80 to the 12c and beyond, other user programs, and other puzzles that highlight other specific pitfalls of TVM solving.

*would like to know full internal precision if possible. Depending on the calculator, can be tricky, but use of `frac`, or subtracting part of the value so you can see the FP representation of the other digits can help.

another tip is to ensure everything is reset before moving onto the next problem.

EDIT: Redirect to one thread now.