Usages of wihada
시험 준비를 위해 매일 문제를 풀어요.siheom junbireul wihae maeil munjereul pureoyo.
To prepare for the exam, I solve problems every day.
친구를 위해 책을 사요.chingureul wihae chaegeul sayo.
I buy a book for a friend.
Elon.io is an online learning platform
We have an entire course teaching Korean grammar and vocabulary.