639 US gallons in imperial cups

Conversion formula
How to convert 639 US gallons to imperial cups?

We know (by definition) that: $1\mathrm{usgallon}\approx 13.3227869540638\mathrm{brcup}$

We can set up a proportion to solve for the number of imperial cups.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 639 ⁢ usgallon ≈ 8513.260863646768 ⁢ brcup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial cup is equal to 0.000117463803355326 times 639 US gallons.

It can also be expressed as: 639 US gallons is equal to $\frac{1}{\mathrm{0.000117463803355326}}$ imperial cups.

Approximation

An approximate numerical result would be: six hundred and thirty-nine US gallons is about eight thousand, five hundred and thirteen point two six imperial cups, or alternatively, a imperial cup is about zero times six hundred and thirty-nine US gallons.