Hundred Million
numeral
おく
億 (おく) Hundred Million
奥 (おく) Far Back, In The Back
置く (おく) To Put Down, To Set Down, To Place, To Put
一億 (いちおく) One Hundred Million
一 (いち) One
十 (じゅう) Ten
百 (ひゃく) Hundred, One Hundred
千 (せん) Thousand
万 (まん) Ten Thousand
十万 (じゅうまん) One Hundred Thousand, Hundred Thousand
百万 (ひゃくまん) Million, One Million
A Hundred Million 億 equals 100,000,000 (8 zeros). おく sounds similar to octagon, octopus, "Octopath Traveler", etc.