15 gallons
Step-by-step explanation:
Since there are 128 fluid ounces in a gallon, you would divide the amount of fluid ounces (1,920) by 128 because by dividing these two numbers, it will show you how many gallons you have.
1 x
——- = ——-
128 1920
1920=128x
Divide both sides by 128 and you should get 15.
Note: the math I just used is algebra 1 level so if you don’t understand the algebraic explanation that’s just fine. :)