How to convert 337 US customary cups to US gallons?
We know (by definition) that:
We can set up a proportion to solve for the number of US gallons.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 US gallon is equal to 0.0474777448071217 times 337 US customary cups.
It can also be expressed as: 337 US customary cups is equal to US gallons.
An approximate numerical result would be: three hundred and thirty-seven US customary cups is about twenty-one point zero five US gallons, or alternatively, a US gallon is about zero point zero five times three hundred and thirty-seven 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.