665 imperial pints in US customary cups
Result
The conversion result is: 665 imperial pints is equivalent to 1597.26340092146 US customary cups.[1]
Conversion formula
How to convert 665 imperial pints to US customary cups?
We know (by definition) that: 1 imperialpint ≈ 2.40189985100971 uscup.
We can set up a proportion to solve for the number of US customary cups.
1 imperialpint / 665 imperialpint ≈ 2.40189985100971 uscup / x uscup
Now, we cross multiply to solve for our unknown x:
x uscup ≈ (665 imperialpint / 1 imperialpint) * 2.40189985100971 uscup → x uscup ≈ 1597.263400921457 uscup
Conclusion:
665 imperialpint ≈ 1597.263400921457 uscup

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US customary cup is equal to 0.000626070815510518 times 665 imperial pints.
It can also be expressed as: 665 imperial pints is equal to 1 / 0.000626070815510518 US customary cups.
Approximation
An approximate numerical result would be: six hundred and sixty-five imperial pints is about one thousand, five hundred and ninety-seven point two five US customary cups, or alternatively, a US customary cup is about zero times six hundred and sixty-five imperial pints.
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.