420 imperial cups in US gallons

Conversion formula
How to convert 420 imperial cups to US gallons?

We know (by definition) that: $1\mathrm{brcup}\approx 0.0750593703440534\mathrm{usgallon}$

We can set up a proportion to solve for the number of US gallons.

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

Conclusion: 420 ⁢ brcup ≈ 31.524935544502426 ⁢ usgallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US gallon is equal to 0.0317209213191996 times 420 imperial cups.

It can also be expressed as: 420 imperial cups is equal to $\frac{1}{\mathrm{0.0317209213191996}}$ US gallons.

Approximation

An approximate numerical result would be: four hundred and twenty imperial cups is about thirty-one point five one US gallons, or alternatively, a US gallon is about zero point zero three times four hundred and twenty imperial cups.