Korean phrase
~ 얼마나 남아야 해요? ~ eol ma na na ma ya hae yo
Meaning
How much ___ should be left?
When to use it
This asks how much of something should remain. It is a polite way to check the needed amount or how much time should remain.
Example dialogue
휴대폰 배터리가 얼마나 남아야 해요? hyu dae pon pae teo ri ga eol ma na na ma ya hae yo
How much charge should the phone have left?
보통 30% 정도는 남아 있어야 해요. po tong 30 cheong do neun na ma i sseo ya hae yo
Usually, it should have about 30% left.