You are served continually by Mathematics and words. For this I feel pity upon you.
Wii owners purchased 8.1 games for every system sold in the month of December according to NPD data. This great attach rate just barely beats out Xbox 360's figure of 7.8. The PS3 trailed with 5 games per console.
Wii owners (Implying total wii owners, close to 10 million) purchased 8.1 games for every system sold in the month of December according to NPD data.
Approximately 10 Million consoles, and decembers total was what maybe 1 million tops. So your left with 8 Million total wii games sold in the month of December or .8 per Wii console.
Explain how this is wrong? read