How dumb is Nancy Pelosi?

In case you can't make out the sound portion of the video, Speaker of the House Nancy Pelosi said the following to a question about unemployment: "Every month, 500 million Americans lose their jobs."

According to the U.S. Census Bureau, there are currently 305,748,952 men, women and children living in the United States. Even if you add the 12 million illegal aliens to the total, how does that up to 500 million, Nancy? No wonder the U.S. economy is in the tank. We have people like Pelosi running Congress.