Wally was a farmer who raised crops. Last year he planted 3 acres of soybeans. He paid $100 for the seed and $200 for fertilizer. A part-time worker helped him plant and harvest. The man's labor cost a total of $500. The crop yielded 700 bushels of soybeans, and Wally sold them for $2.03 a bushel. How much did W ally profit on his soybeans last year?