Bluebulb Projects' The Measure of Things presents:
25 is about 0.0000003 times the number of Copies of Wii Sports Sold.
In other words, it's 0.00000030230 times the count of Copies of Wii Sports Sold, and the count of Copies of Wii Sports Sold is 3,308,000 times that amount.
(a.k.a. Wii スポーツ, a.k.a. Wi Supotsu) (2006 edition) (sales figures as of March 31, 2015) Wii Sports, the version that was bundled with the original Wii console, has sold 82.69 million units as of March, 2015.