CAS and small numbers

[Nigel (UK)]

I'm having problems when working with equations with small coefficients in the Prime CAS? For example, evaluating the equation

e=6.63e-34*f

gives e=0, because the CAS simplifies small numbers to zero. This makes it impossible to rearrange the equation to get f=e/6.63e-34: solving for f returns an empty list.

I agree that this is a trivial example, but the same problem arises with more complicated equations. I've asked this question before (on the old forum, I think) but I'm wondering if anyone has any new ideas? I realise that setting small approximate numbers to zero is an intended feature of Xcas, but the Prime would be more useful to physicists (and physics students) if this behaviour could be turned off or at least worked around in some way.

Nigel (UK)