644 imperial cups in US gallons
Result
The conversion result is: 644 imperial cups is equivalent to 48.3382345015704 US gallons.[1]
Conversion formula
How to convert 644 imperial cups to US gallons?
We know (by definition) that: 1 brcup ≈ 0.0750593703440534 usgallon.
We can set up a proportion to solve for the number of US gallons.
1 brcup / 644 brcup ≈ 0.0750593703440534 usgallon / x usgallon
Now, we cross multiply to solve for our unknown x:
x usgallon ≈ (644 brcup / 1 brcup) * 0.0750593703440534 usgallon → x usgallon ≈ 48.33823450157039 usgallon
Conclusion:
644 brcup ≈ 48.33823450157039 usgallon
Conversion in the opposite direction
The inverse of the conversion factor is that 1 US gallon is equal to 0.0206875573820867 times 644 imperial cups.
It can also be expressed as: 644 imperial cups is equal to 1 / 0.0206875573820867 US gallons.
Approximation
An approximate numerical result would be: six hundred and forty-four imperial cups is about forty-eight point three four US gallons, or alternatively, a US gallon is about zero point zero two times six hundred and forty-four imperial 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.