Korean phrase
아, 그렇군요. a keu reo ku nyo
Meaning
Ah, I see
When to use it
It shows that new information is understood. It is a brief, fairly polite response and can also show mild surprise.
Example dialogue
오늘 밤에 저녁 못 갈 것 같아. 야근해야 해. o neul pa me cheo nyeok mot kal kkeot ka ta ya geun hae ya hae
I don't think I can go to dinner tonight. I have to work late.
아, 그렇군요. a keu reo ku nyo
Ah, I see.