The new math

Woolworths. This evening. The total on the register screen shows $22.44. Paying by card.

[Checkout Chick] Would you like any cash out?
[ToxicPurity] Twenty dollars, please.

Checkout chick looks at screen. Thinks about punching a button. Hesitates. Considers it again. Decides against. Turns to Checkout Chick Two.

[Checkout Chick] She wants twenty dollars. That would be $66.44?

Fortunately Checkout Chick 2 knew how to add.