You're not factoring in inflation with those WWII numbers are you? That 11B is 130b in today's money.
During your lifetime, you'll eat about 60,000 pounds of food, that's the weight of about 6 elephants.
That $11B is in current dollars of the time. The US budget before FDR was like $2B, and $45B when he left. That $45B came with huge deficits and total national debt was higher than GDP. We're about to have a debt higher than GDP again soon, for the first time since WW II.
Our ancestors should have used condoms if they were into that sort of thing. Oh well, too late now. barfo