Wandering somewhat off topic …
In fact, it’s actually 7 billion (7,000,000,000,000), as the currently fashionable ‘billion’ (1,000,000,000) is actually a milliard (a thousand million), while the term trillion is inaccurately used to describe a billion. The American’s have dropped the intermediate “ards” and squashed down the names.
Billion 1,000,000,000,000 (i.e. a bi-illion)
Trillion 1,000,000,000,000,000,000 (i.e. a tri-illion)
and so on.
I really don’t get the American “devaluation” of the numbering system and its very recent use here (possibly a case of more sloppy journalism) … the European continentals still use the above numbering. If you listen to our German friends talk in their native tongue you’ll hear regular mention of “Milliarde”.
Either way, it’s still a massive amount of money to run up as debt and an damning indictment of the failure of US administrations to get their budgetary act together.