[ZenGum]

Japanese portions are often smaller.

Burger king portions may also be smaller than you're used to.

Also, Japanese culture is anal retentive very precise. If the Japanese burger-maker was told to put 1050 slices on that thing, I'd give it a better than 50% chance that there are exactly 1050 slices.

Whenever I paid for anything with notes, the Japanese shop attendant would hold the notes, give them a special flick so they don't stick together, count them, then turn them over, flick again, and count them again, going the other direction.

Even if I had clearly given them just a single note.