How to convert 863 US customary 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 0.0222655837868803 times 863 US customary cups.
It can also be expressed as: 863 US customary cups is equal to imperial gallons.
An approximate numerical result would be: eight hundred and sixty-three US customary cups is about forty-four point nine zero imperial gallons, or alternatively, a imperial gallon is about zero point zero two times eight hundred and sixty-three US customary 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.