“But my math teacher said you can’t divide by zero.”

“That’s what they used to think in the pre-dot-com economy days, but we know better, now. There, you end up with a final figure of… lessee, carry the one… $9.28.”

“So that’s how they figure out ticket service charges. Gosh, you make it look so easy.”

“It is easy once you know the formulas. Now, if you have an extra couple of hours, I’ll show you how they pick support bands.”