A long time ago, my mother bought four beigels at 25p each* from a local bakers.
"There you go, four beigels £1,25" said the shop assistant
"No, four times 25 is 100" replies my mum.
"Look!" says the asistant, and proceeds to write a column:
"See, numbers can't lie!"
"OK", says my mum "Give me one beigel" and hands over 25p. She then repeats this three more times, and leaves the shop.
Moral: When in Rome do as Romans do. When in thievery, do as the thieves do! (Do your own dammed accumulator next time.)
* I believe it was in the days of £sd but I modernised the story for the yoof of today.