Usually the units handling in numerical and calculated questions works with a multiplier factor...
I think with these questions, units handling "only" works with a multiplier factor. Unfortunately, with the Formulas question, unit handling also only works with a multiplier factor.
This is somewhat surprising since dBW, dBm, etc. are often used in acoustics, electronics, telecommunications and control theory.
Any idea to manage this?
The ideal would be to modify the source code of the question.