What is the average game length in the 2018 LCK season included in the dataset?

What is the average game length in the 2018 LCK season included in the dataset?: a task in SmolDataEnvs-harbor-train-sandbox: 📊 SmolDataEnvs: Harbor (train) (Harbor dataset). Files (in /home/user/input, no subfolders): - LeagueofLegends.csv