This is the 428th most frequent Japanese word.
億
"億" means "hundred million" in English.
In this sentence, '億' is used to indicate a large count, illustrating quantities such as population.
世界の人口は80億人を超えています。
The population of the world exceeds 8 billion people.
'億' is employed here to quantify financial figures on a national scale, representing billions in foreign currency.
この国の年間予算は20億ドルだそうです。
The annual budget of this country is said to be 2 billion dollars.
Here, '億' denotes a numerical value, specifically '100 million'. It is used in the context of expressing a large monetary amount.