[QUOTE="nightjar .uk.com>"] Nope. Colin Bignell [/QUOTE] OK i knew I was sticking my neck out there? But where did I go wrong. At 1/8d a gallon you get 8 gallons for a 'd'. 8x12 (12d in a schilling)=96 96x10 (for 10 bob)=960 Ahh but thats for 10 bob not £1 So it should have been 1920 gallons for £1. Anyway you get 'the general idea'. Must have been a WWII supertank I guess.