A cement manufacturer has supplied the following data: Tons of cement produced and sold Sales revenue Variable manufacturing expense Fixed manufacturing expense Variable selling and administrative expense Fixed selling and administrative expense Net operating income 680,000 $ 2,788,000 $ 1,156,000 $ 760,000 $ 272,000 $ 294,000 $ 306,000 What is the company's unit contribution margin? (Round your intermediate calculations to 2 decimal places.)