639 US customary cups in imperial gallons
Result
The conversion result is: 639 US customary cups is equivalent to 33.2549252486202 imperial gallons.[1]
Conversion formula
How to convert 639 US customary cups to imperial gallons?
We know (by definition) that: 1 uscup ≈ 0.0520421365393118 imperialgallon.
We can set up a proportion to solve for the number of imperial gallons.
1 uscup / 639 uscup ≈ 0.0520421365393118 imperialgallon / x imperialgallon
Now, we cross multiply to solve for our unknown x:
x imperialgallon ≈ (639 uscup / 1 uscup) * 0.0520421365393118 imperialgallon → x imperialgallon ≈ 33.25492524862024 imperialgallon
Conclusion:
639 uscup ≈ 33.25492524862024 imperialgallon
Conversion in the opposite direction
The inverse of the conversion factor is that 1 imperial gallon is equal to 0.0300707336589635 times 639 US customary cups.
It can also be expressed as: 639 US customary cups is equal to 1 / 0.0300707336589635 imperial gallons.
Approximation
An approximate numerical result would be: six hundred and thirty-nine US customary cups is about thirty-three point two five imperial gallons, or alternatively, a imperial gallon is about zero point zero three times six hundred and thirty-nine US customary cups.
Footnotes
[1] 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.