Barclay Bikes manufactures and sells three distinct styles of bicycles: the youth model sells for $400 and has a unit contribution margin of $155; the Audit model sells for $950 and has a unit contribution margin of $500; and the Recreational model sells for $1,100 and has a unit contribution margin of $550. The company's sales mix includes: 5 Youth models; 9 Adult models; and 6 Recreational models. If the firm's annual fixed costs total $6,600,000, calculate the firm's contribution margin per composite unit.