John poured 14 of milk from a 2 gallon jug. How much milk, in gallons, is still left in the jug?
14 what? ounces, pints, cups, milliliters?
In any case, if there are g of them in a gallon, then
2 - 14/g gallons will be left
In any case, if there are g of them in a gallon, then
2 - 14/g gallons will be left