This is the 1724th most frequent Korean word.
이하로
"이하로" means "below" or "under" in English.
In this sentence, '이하로' is used to specify an age limit.
나이는 20세 이하로 참가 가능합니다.
Age 20 or below can participate.
Here, '이하로' denotes a maximum time limit for studying per day.
하루에 5시간 이하로 공부하세요.
Please study for 5 hours or less per day.
In this context, '이하로' is used to express a monetary limit.