I, like many individuals out there, have a hard time really wrapping my brain around large numbers. This isn’t to say that I can’t do math, just that after a certain denomination, I tend to lose sight of the impact that such large amount of money can have. So when Fannie Mae recently reported that it lost $23.2 billion in the first quarter of 2009. I largely shrugged it off. If you look at what just one billion dollars looks like, however, you can get a much better grasp of the situation.