They are all measures of volume.
40 US gallons = 5,120 US fluid ounces.
(272 fluid ounces) / (128 fluid ounces per gallon) = 2.125 gallons
* US1 US gallon = 128 fluid ounces [US]Therefore, 2 US gallons = 256 fluid ounces* UK1 UK gallon = 160 fluid ounces [UK]Therefore, 2 UK gallons = 320 fluid ounces
Fluid ounces divided by 128 = gallons
240 fluid ounces is 1.88 gallons. (US)
2.5 gallons is 320 fluid ounces.
220 fluid ounces is about 1.72 US gallons.
1.5 gallons is 192 fluid ounces.
14 gallons is 1,792 fluid ounces.
2 gallons is 256 fluid ounces.
1,792 fluid ounces is 14 gallons.
12 US gallons = 12 x 128 fluid ounces = 1536 fluid ounces