Britain and the US are famously separated by a common language.
And it’s not just our currency that’s different from the rest of Europe.
I’m a Euro-phile, but I still think of distances in miles, my weight in pounds, my height in feet and the weather in farenheit.
It even helps you with your Morse code: ..-./.-/-…/
By the way, the answer is 5021496815286624.