At this website, you can figure out how much your dollar is worth in about any currency unit in the world. This site may be particularly useful to you if you do, in fact, have only one dollar. In that case, you might want to consider moving to Bali to get the most bang for your buck.
On October 29, 2015—nothing special about this date; we just needed to pick one, and this one seemed as good as any—$1 was worth 0.65258 British pounds, and 1 British pound was worth $1.53237. If we let D be U.S. dollars and P be British pounds, we can convert between dollars and pounds using the following formulas:
P = 0.65258D
D = 1.53237P
Awesome. Now we can buy a bap (that's a type of bread, for those of you not in the know) with American money or a deep-fried Twinkie (a type of "bread"?) with British currency. How worldly we are.
Bear in mind, though, that currency conversions change literally every day, depending on the world market. Pop over here if you're curious about how much an American buck is worth in British pounds right this second.
On October 29, 2015, how many British pounds could you get for $1,000,000?
When D = 1,000,000 then P = 0.65258(1,000,000) = 652,580. One million dollars gets you 652,580 pounds. Should be easier to squeeze into a briefcase at least.