Bent Tree incurred the following unit costs during the year: variable manufacturing cost, $$27$; fixed manufacturing cost, $$10$; variable marketing and administrative cost, $$8$; and fixed marketing and administrative cost, $$6.$ During the year, Bent Tree produced $30,000$ units and sold $25,000$ units of product. The selling price was $$67$ per unit. What was Bent Tree's total gross margin?