The result of your conversion between cup [US] and gallon [US, dry] appears here
To convert between Cup [US] and Gallon [US, Dry] you have to do the following:
First divide (0.000016387064 * 231)/16 / 0.0044048838 = 0.05371044
Then multiply the amount of Cup [US] you want to convert to Gallon [US, Dry], use the chart below to guide you.
Symbol: c
No description
Symbol: gal
No description