Playlist

Chef's playlist contains $3$ songs named $A, B$, and $C$, each of duration exactly $X$ minutes. Chef generally plays these $3$ songs in loop, i.e, $A \rightarrow B \rightarrow C \rightarrow A \rightarrow B \rightarrow C \rightarrow A \rightarrow \dots$ Chef went on a train journey of $N$ minutes and played his playlist on loop for the whole journey. How many times did he listen to the song $C$ **