It used to be that you had to go to a classroom, and there would be some diligent teacher -- some genius teacher in there -- but that person was only in there at certain times and you had to go then, and then was not most times.
Dulu harus pergi ke sekolah untuk mempelajarinya, di sana ada guru yang rajin -- ada guru yang genius -- tapi cuma ada di sana pada jam tertentu, kemudian Anda harus pulang, kelas itu juga jarang.