Gaeul: You've been staring depressingly at that book, are the problems that hard?
Leeseo: Yeah, how does this even work
Gaeul: Oh c'mon you just have to do this
Leeseo: Are you sure with that formula?
Gaeul: Of course, when have my calculations ever been wrong?
Leeseo: Well..
Gaeul: Shut up, that was only one time