The total number of shirts in the donation box is <<4=4>>4.
The total number of pants in the donation box is 4 x 2 = <<4*2=8>>8.
The total number of shorts in the donation box is 8 / 2 = <<8/2=4>>4.
The total number of clothes donated is 4 + 8 + 4 = <<4+8+4=16>>16 pieces.
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