Looking for TVM contributions

[dm319]

Is there anyone up for trying these problems on their financial calculator? Or else I'm going to have to build up my collection and will be very costly on my finances and spousal relationship.

Would be curious if anyone has the HP-80, HP-70, HP-22, HP-27, HP-37E, original HP-12c, HP-18c, HP-17B and HP-10Bii/17Bii to see how these fare. I'm curious to see if we can see the underlying algorithm changing, but maybe this is a very niche curiosity.