He then went to see the oranges being harvested. He found out that they harvest 37 sacks per day and discard 17 of them. How many oranges do they harvest per day if each sack contains 38 oranges?
They harvest 37 sacks per day, which means they harvest 37 * 38 = 1,386 oranges per day. They discard 17 sacks per day, which means they discard 17 * 38 = 646 oranges per day. Therefore, they net 1,386 - 646 = 740 oranges per day.