Three men pay $30 as a group to rent a room. The clerk discovers he has overcharged the group $5 and he gives the bellhop the money to return to the three men. The bellhop decides that $5 is too hard to divide by three and then he gives each man a dollar each and keeps the remaining $2 for himself. The three men have paid $9 each, the bellhop has kept $2, making $29. Where did the extra dollar go?