Diversifying Ruined

My mystery MSN friend asked me this question.

一百万 = 1 million
一千万 = 10 million
than 830 million = ?

I decided to post here so that all my readers can refresh their memory or learn from it.

10, 000 = Ten Thousand = 一万
100,000 = One Hundred Thousand = 十万
1,000,000 = One Million = 一百万
10,000,000 = Ten Million = 一千万
100,000,000 = One Hundred Million = 一亿
1,000,000,000 = One Billion = 十亿