The 2014 balance sheet of Maria's Tennis Shop, Inc., showed long-term debt of $6.7 million, and the 2015 balance sheet showed long-term debt of $4.9 million. The 2015 income statement showed an interest expense of $80,879. During 2015, Maria's Tennis Shop, Inc. realized the following:
Cash flow to creditors $ 17,592
Cash flow to stockholders $ 74,944
Suppose you also know that the firm's net capital spending for 2015 was $2.9 million, and that the firm reduced its net working capital investment by $86,263. What was the firm's 2015 operating cash flow, or OCF?