How many rows were removed from the dataset due to missing values in the TotalCharges column?

How many rows were removed from the dataset due to missing values in the TotalCharges column?: a task in SmolDataEnvs-harbor-train (Harbor dataset). Files (in /home/user/input, no subfolders): - WA Fn-UseC -Telco-Customer-Churn.csv - WA Fn-UseC -Telco-Customer-Churn.csv