If you know the problem beforehand, don't spoil it for others !
Guild Wars 2, Isle of Janthir (NA)
Peace is a lie, there is only passion. Through passion, I gain strength. Through strength, I gain power. Through power, I gain victory. Through victory, my chains are broken.
You don't add the money you owe to the totals to get $100, you add the money you spent. For example, prior to giving the $2 back, you had $3 and you owe $50 + $50. The total there is $103, where is the missing negative $3 you ask?!