When performing a series of simple field calculations on various fields with a certain set of values it would be very helpful to have a list of previous calculations at hand (in calculator or directly in field’s context menu). Such list would make these frequent values available for instant access (sorted by most or last used) allowing to quickly pick the desired one and thus avoiding retyping.
The values could be stored temporarily or permanently, available everywhere within current document or application instance. The list could filter values according to chosen field’s type.
This idea focuses on improving and speeding up simple calculation process by using history of values and differs from advanced calculation workflow which make use of save/load expression.