How does a small mom and pop that's open during normal business hours have 16 hours a day of high schooler employment? If a shave ice place stays open til 6:00 pm, that would typically mean the hours between 3:00-6:00 are open for teens. How many mom and pops employ FIVE or more teens for such a shift?  If the operation is that large, a $100,000 profit seems small and arbitrary, like you picked that amount out of the air. What am I missing here?