Suppose joel decides to go fishing at Lake Veronica on his day off from work, but he faces a choice: he can fish the north, south, east, or west side of the lake. His expected catch for the day is as follows: 1 fish on the north side, 4 fish on the south side, 7 fish on the east side, 2 fish on the west side. What is Joel's benefit from fishing on the south side of the lake?