Ow do I know how many units are currently being mined?

현재 전체적으로 몇대가 채굴이 되는지는 어떻게 알 수 있나요?

실시간으로 작동 여부를 확인하는 방법을 알고 싶습니다.

How do I know how many units are currently being mined?

I would like to know how to check if it works in real time.

You cannot. No node can have complete knowledge of the whole network in real-time.