7 gallons is 112 half-pints.
20 Imperial pints equal two and a half Imperial gallons.
12 pints
That is 28 pints
2 and a half gallons is 10 quarts (4 for each gallon and 2 more for the half gallon). There are 2 pints in each quart, so 20 pints in 2 and a half gallons.
120gallons
10
44
64
28
8 pints a gallon, 3 gallons, 8*3=24
1 US gallon = 8 US pints so, 5.5 US gallons = 44 pints