noun
tens; dozens; scores
Used to express an indefinite number in the tens, often with a sense of 'many'. Commonly appears in patterns like 何十人 (dozens of people) or 何十回 (tens of times).
会場には何十人もの人が集まった。
Dozens of people gathered at the venue.
彼は何十回も同じ説明を繰り
He repeated the same explanation tens of times.