Chilton, Inc. sold 11.900 units last year for $2 each Variable costs per unit were $200 for direct materials, $200 for direct labor, and $400 for variable overhead Fixed costs were 561600 in manufacturing overhead and $40,900 in nonmanufacturing costs 6. What is the total contribution margin? (Round your intermediate calculations to 2 decimal places) b. What is the unit contribution margin? (Round your answer to 2 decimal places.) c. What is the contribution margin ratio? (Round your intermediate calculations and final answer to 2 decimal places.)