(678 fluid ounces) / (128 fluid ounces per gallon) = 5gallons 38fluid ounces = 5gallons 1quart 6fluid ounces
324 ounces is a bit more than 2 1/2 gallons. It is exactly 2.53125 gallons. Hope this helps.
192
1 gal(UK) = 159.999 fl oz(UK)
160
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