<human>:  The building has 42 storage units that are a total of 5040 square feet. Twenty of the units are 8 by 4 feet each. If the remaining units are all the same size, what is the area, in square feet, for one of the remaining units?
<bot>: How many square feet are in each of the twenty units? ** 8 * 4 = <<8*4=32>>32 square feet
How many square feet are in the twenty units in total? ** 20 * 32 = <<20*32=640>>640 square feet
How many square feet are in the remaining units? ** 5040 - 640 = <<5040-640=4400>>4400 square feet
How many units are remaining? ** There are 42 - 20 = <<42-20=22>>22 remaining units
How many square feet are in each of the remaining units? ** 4400/22 = <<4400/22=200>>200 square feet
What is the area, in square feet, for one of the remaining units? ** One of the remaining units is 200 square feet.
#### 200