How to convert 339 imperial cups to imperial gallons?
We know (by definition) that:
We can set up a proportion to solve for the number of imperial gallons.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 imperial gallon is equal to 0.0471976401179941 times 339 imperial cups.
It can also be expressed as: 339 imperial cups is equal to imperial gallons.
An approximate numerical result would be: three hundred and thirty-nine imperial cups is about twenty-one point one nine imperial gallons, or alternatively, a imperial gallon is about zero point zero five times three hundred and thirty-nine imperial cups.
 The precision is 15 significant digits (fourteen digits to the right of the decimal point).Results may contain small errors due to the use of floating point arithmetic.