This guy's patience is amazing, but it's sad to hear when he asks the manager "How would you write down half-a-cent?" and she responds "That would be 0.005, I think. I'm not a mathematician." She then proceeds to try to use the calculator as if it's going to provide a magical answer, and because the calculator says one number, that's the right number. Having taught high-school math, I realize that many students are over-reliant upon calculators, but still . . .
Related blog is here . . .