Maxwell Corporation manufactures toy building sets. For the month of May, Maxwell sold 10,000 sets. Financial information relating to the building sets is shown below: Selling price $2,000 per unit Cost of goods sold (all variable) $500 per unit Variable selling expense $100 per unit Total fixed selling expense $600,000 Variable administrative expense $50 per unit Total fixed administrative expense $800,000 Gross margin for May is Contribution margin for May is You must enter your answer in the following format: $x, XXX