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hundred million; 100,000,000; 10^8
この会社の売上は年間十億円です。
This company's annual sales are 1 billion yen.
日本の人口は約一億二千万人だ。
Japan's population is about 120 million.
宝くじで三億円当たりたいな。
I want to win 300 million yen in the lottery.