Numbers

$3.9 billion Monthly cost of the U.S. military presence in Iraq, according to Secretary of Defense Donald Rumsfeld

$2 billion Monthly cost of the U.S. military presence in Iraq projected by the White House in April

111 Days U.N. inspectors spent in their unsuccessful search for weapons of mass destruction (WMD) before they were forced to leave Iraq so the U.S. could launch the war

117 Days U.S. forces have spent (from the start of the war through last Saturday) in their thus far futile search for WMD

23 million Number of people who signed up in the first two weeks for the federal do-not-call registry

$11,000 Amount of fine faced by telemarketers who call those on the list after Oct. 1

4 Number of U.S. Presidents who have lived to be 90 or older, including Gerald Ford, who turns 90 on July 14

92 Age of Ronald Reagan, the oldest ex-President ever

Sources: U.S. Senate; TIME; New York Times; USA Today