721 US gallons in US customary cups

Conversion formula
How to convert 721 US gallons to US customary cups?

We know (by definition) that: $1\mathrm{usgallon}\approx 16\mathrm{uscup}$

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

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

Conclusion: 721 ⁢ usgallon ≈ 11536 ⁢ uscup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary cup is equal to 8.66851595006935e-05 times 721 US gallons.

It can also be expressed as: 721 US gallons is equal to $\frac{1}{\mathrm{8.66851595006935e-05}}$ US customary cups.

Approximation

An approximate numerical result would be: seven hundred and twenty-one US gallons is about eleven thousand, five hundred and thirty-six US customary cups, or alternatively, a US customary cup is about zero times seven hundred and twenty-one US gallons.