Bluebulb Projects' The Measure of Things presents:
100,000,000,000 is about 500 times the number of Copies of Charles Dickens' A Tale of Two Cities Sold.
In other words, the count of Copies of Charles Dickens' A Tale of Two Cities Sold is 0.002 times that amount.
(figures as of 2015) First published in 1859, Charles Dickens' A Tale of Two CIties is the best-selling novel of all time, for which complete sales figures are available, having sold an estimates 200 million copies. The novel itself contains 135,420 words.