In the PAL region, which covers most of Africa, Asia, Europe, and Oceania, Twilight Princess is the best-selling entry in the Zelda series. During its first week, the game was sold with three of every four Wii purchases. The game had sold <answer>5.82 million</answer> copies on the Wii as of March 31, 2011[update], and 1.32 million on the GameCube as of March 31, 2007[update].
How many units of the Wii version of Twilight Princess had been purchased by the end of March 2011?
5.82 million