에 넣고

put in

→ 에
phrase Common #2,084
put in 에 marks the place or container something is put into, and 넣고 means “put in and then.” In 손에 넣고, the expression is idiomatic and means “get one's hands on” or “obtain.”
KO: 책을 가방에 넣고 학교에 갔어요.
EN: I put the book in my bag and went to school.

엄청 뜨거운 오븐에 넣고 절대 열지 마

Put it in a very hot oven and never open it.

— 아임 스틸 히어 (2024)

닭장에 넣고

Put it in the chicken coop and come back.

— 행복한 라짜로 (2018)