Versions and Calculations?

Experts,

I have a use case and would like to get your feedback.

We currently use  Versions / Scenarios to track different forecast numbers by different departments.

2 questions

1) Is it possible to perform calculations using versions?

Example : V1 and  V2 are versions... KF1 (Stored and calculated)  is in both versions.  V2.KF1 (calc) = (V1.KF1(Stored) - V2.KF1 (Stored)) * V1.KF1 (Stored).

2) is it possible to use different exchange rate based on different versions?

Thanks,

Krishna