A home business examines its monthly production costs and sales and finds the cost function when x items are produced is given by: C(x) = 1873 +40x - 0.021x2 (in dollars) and the price each item can be sold for is given by: p(x) = 86 0.09x (in dollars) Find the revenue when the profit is maximized. Round your answer to two decimal places and do not include units.