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