Put in (someone's) two cents

Translation of "put in (someone's) two cents" into Russian

вставить свои пять копеек

Whenever there's a debate, she always has to put in her two cents.

Когда идет обсуждение, она всегда должна вставить свои пять копеек.

To offer one's opinion or advice, usually unsolicited or unwelcome, on a subject being discussed.