This is the 4624th most frequent Russian word.
десятку
"Десятку" is the accusative or dative form of "десятка," meaning "ten" or "a group of ten" in English, sometimes referring to a ten-ruble coin or bill.
Here, "десятку" refers to a ten-unit monetary denomination, such as a ten-dollar bill or ten-ruble note.
Дай мне десятку, я верну завтра.
Give me a ten, I'll return it tomorrow.
In this sentence, "десятку" is used figuratively to mean a bullseye or something accurate and on point.
Ты попал в десятку своим комментарием.
You hit the mark with your comment.
Here, "десятку" represents the cardinal number ten, indicating the quantity of screws needed.