Vocabulary consisting only from characters you are able to read
十億
juuoku
1,000,000,000, billion (American), (obs) milliard (British)mix
百万
hyakuman
(1)1,000,000, one million, million, (2)many mix
百
hyaku
(num) 100, hundredjlpt5
億
oku
(num) 100,000,000, hundred millionjlpt4