Answer:
$800
Explanation: pork bellies contract purchased at $0.59 per lb.
One contract = 40,000 lbs.
$0.59 x 40,000 = $23,600.
Drop in price to $0.57 per lb at the end of the day.
$0.57 x 40,000 = $22,800
Change in value of the contract during the day
Original contract - drop in price
$23,600 - $22,800. = $800