This is the 178th most frequent Ukrainian word.
млрд
The Ukrainian word "млрд" means "billion" in English.
Here, "млрд" is used to denote a large countable quantity, specifically the population of humans globally.
Популяція світу досягнула позначки 8 млрд осіб.
The world's population has reached 8 billion people.
In this sentence, "млрд" (billion) is used to quantify a large numerical figure, specifically in a financial context to express the equivalency in a different currency.
Український державний бюджет наступного року становитиме трильйон гривень, що рівноцінно приблизно 37 млрд доларів США.
Ukraine's state budget for next year will be one trillion hryvnias, which is roughly equivalent to approximately 37 billion US dollars.
This usage of "млрд" relates to the extent of monetary investment into advancements by a corporation.