Is there anyway to find out how many hours/days worth of time Ive played this game?

Ive been playing league for around 3 years now and i really feel like its my most played game ever, however i have no way to know for sure. Ive played just about every single day (expect for when finals roll around) usually playing 2-3 games on a school day and upwards of around 10 games on a day without school. Id love to know the exact time. I know that I have around 22 days worth of play time in Cod Bo2, and im curious if ive surpassed that with league. If there's can someone plz let me know, thanks. [slayer-jinx-catface]