800000000 (number)
From Tardis Wiki, the free Doctor Who reference
800000000 was a number.
In 1791, Hempel noted the planet Earth's human population to be "eight hundred million, give or take." (AUDIO: The Sword of the Chevalier)
In 2009, the Tenth Doctor noted that there were eight hundred million cars on Earth. In anticipation of the Sontaran invasion of Earth, about half of these cars were fitted with ATMOS devices. (TV: The Sontaran Stratagem)