Conversion factor is 1 gallon is to 128 fluid ounces.
If 2,432 fluid ounces leaked out, to find out the amount of gallons this was, you need to divide the fluid ounces by the number of fluid ounces in a gallon. This is what is done when moving from a smaller unit to a larger one.
Since Timothy collected more, we take the amount Timothy collected and subtract the amount Eric collected from that. That means Timothy collected .5 kilograms more candy than Eric.
