Situation: I am following the presentation while facing the table and the projector screen and there is one trash can immediately behind me and an office chair directly in front of me.
Alternative situations: When I was speaking at the head of the table someone threw a paper ball over my head and it landed in the trash can right behind me. Sitting in the office chair at the end of the table, giving a presentation.
Question: How many chairs are on each the right and left sides of the main table?