1.61 gal
1 gallon makes 128 ounces and 1 ounce is 0.0078 gallon in U.S measure. There are 8 ounces in a cup, 2 cups in a pint, 2 pints in a quart and 4 quarts in a gallon. That makes 128 ounces in a gallon US. In UK 20 ounces to the pint, 8 pints to the gallon which makes 160 ounces Imperial measure.
20 gallons = 2,560 ounces.
13.2 gallons is 1,689.6 ounces.
8320 ounces is 65 gallons.
169 ounces is 1.32 US gallons.
63 US gallons is 8,064 ounces.
5.22 fluid ounces is 0.04 gallons.
Eleven US gallons is 1,408 ounces.
24 US gallons is 3,072 ounces.
211 fluid ounces is 1.648 gallons.
15,360 fluid ounces is 120 gallons.
15 US gallons = 1,920 ounces.
400 US gallons = 51,200 ounces.