How to convert 640 US dry barrels to imperial cups?
We know (by definition) that:
We can set up a proportion to solve for the number of imperial cups.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 imperial cup is equal to 3.83953252317982e-06 times 640 US dry barrels.
It can also be expressed as: 640 US dry barrels is equal to imperial cups.
An approximate numerical result would be: six hundred and forty US dry barrels is about two hundred and sixty thousand, four hundred and forty-eight point three six imperial cups, or alternatively, a imperial cup is about zero times six hundred and forty US dry barrels.
 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.