How to convert 18 US gallons to imperial cups?
We know (by definition) that:
We can set up a proportion to solve for the number of imperial cups.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 imperial cup is equal to 0.00416996501911408 times 18 US gallons.
It can also be expressed as: 18 US gallons is equal to imperial cups.
An approximate numerical result would be: eighteen US gallons is about two hundred and thirty-nine point eight one imperial cups, or alternatively, a imperial cup is about zero times eighteen US gallons.
 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.