"I know how money works. It's the math bit I can't do but I know how much things cost. You look at the number on the price tag and match it up to the number. Or the colour. I used to do colours." Red for 10, purple for 20, blue for 5. It was easier like that. And then the coins all meant stuff. "If you show the check out ladies what you have, they usually help too."

They were all very nice to him. He didn't often have a bad experience shopping. "I can do the money for you. What are we gonna buy?"