Simplex Healthcare had net income of $5,411,623 after paying taxes at 34 percent. The firm had revenues of $20,433,770. Its interest expense for the year was $1,122,376, while depreciation expense was $2,079,112. What was the firm's operating expenses excluding depreciation? Round your intermediate calculations and final answer to the nearest dollar. $8,199,429 $9,032,853 $9,321,805 None of the above