Complex sentence: The hotel the teams had stayed at cleared out all the rooms with their gear in it, with a total of 40-50 personal belongings being lost or misplaced, including mice, keyboards, headsets, and car keys.
Split into simpler sentences: The hotel the teams had stayed at cleared out all the rooms with their gear in it. A total of 40-50 personal belongings were lost or misplaced, including mice, keyboards, headsets, and car keys.