How to convert 509 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 0.000147464381815429 times 509 US gallons.
It can also be expressed as: 509 US gallons is equal to imperial cups.
An approximate numerical result would be: five hundred and nine US gallons is about six thousand, seven hundred and eighty-one point three zero imperial cups, or alternatively, a imperial cup is about zero times five hundred and nine 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.