Help please! Will give brainliest to the fastest answer!

Below is a drawing of 15 tables in a school that are pushed up against one another in a rectangular space. The rectangular space has a length of 20 feet by 12 feet. Your job is to determine the area of the shaded space.'

Help please Will give brainliest to the fastest answer Below is a drawing of 15 tables in a school that are pushed up against one another in a rectangular space class=