The value of money is subjective, depending on age. At the age of one, one multiplies the actual sum by 145,000, making one pound seem like 145,000 pounds to a one-year-old. At seven – Bertie’s age – the multiplier is 24, so that five pounds seems like 120 pounds. At the age of twenty four, five pounds is five pounds; at forty five it is divided by 5, so that it seems like one pound and one pound seems like twenty pence. (All figures courtesy of Scottish Government Advice Leaflet: Handling your Money.)