Human: Sean designs and sells patches.  He orders his patches in a unit of 100 and is charged $1.25 per patch.  If he turns around and sells all 100 patches for $12.00 each, what is his net profit? Assistant:
He orders 100 patches and they cost $1.25 each so the patches are 100*1.25 = $125.00
He sells each of the 100 patches for $12.00 each so he makes 100*12 = $1,200.00
He makes $1,200.00 selling patches and spends $125.00 to have them made so his net profit is 1200-125 = $1,075.00