를 내고

… and make

→ 를
phrase Common #2,580
… and make A phrase fragment: 를 marks the object, 내다 means “make” or “produce,” and 고 connects this action to what follows. The exact translation depends on the object, as in making a sound or showing anger.
KO: 큰 소리를 내고 모두를 깨웠어요.
EN: I made a loud noise and woke everyone.