That’s what the so-called “financial crisis” of 2008 has cost the federal government directly… so far.* Wonder how that stacks up to other crises? CNBC has a slideshow showing the costs (inflation-adjusted) of some of the biggest government projects ever.
You may bring your eyebrows back to earth now.
* Some of this money is in the form of loans. Many of these loans are to companies hemorrhaging cash faster than they can borrow it and are explicitly designed as relief against bad assets, however, and the crisis is hardly over. So, counting this money as lost is only wise.