"Lucky for you, you don't understand math or money.
$1T today in 1920 would be $50B."
Bzzt, sorry, wrong answer.
http://www.westegg.com/inflation/infl.cgi
"What cost $50,000,000,000 in 1920 would cost $535,216,317,247.55 in 2005."
Don't worry, you were just off half a trillion dollars...