Korean phrase
~ 얼마나 될까요? ~ eol ma na toel kka yo
Meaning
Roughly how much will ___ be?
When to use it
This asks how much, how many, or how long. It is a polite, indirect way to ask for an estimate.
Example dialogue
참석 인원은 얼마나 될까요? cham seok i nwo neun eol ma na toel kka yo
About how many people will attend?
대략 20명 정도를 예상하고 있어요. tae ryak 20 myeong cheong do reul ye sang ha go i sseo yo
I expect about 20 people.