Vocabulary consisting only from characters you are able to read
百万
ひゃくまん
(1)1,000,000, one million, million, (2)many mix
億
おく
(num) 100,000,000, hundred millionjlpt4
兆
ちょう
(1)sign, omen, indication, portent, (num) (2)10^12, 1,000,000,000,000, trillion (American), (obs) billion (British) mix
一兆
いっちょう
1,000,000,000,000, one trillion, one billion (obs. British)mix
万
まん
(num) 10,000, ten thousand, (adv) myriads, alljlpt5