The 2017 balance sheet of Kerber's Tennis Shop, Inc., showed $3.1 million in long-term debt, $780,000 in the common stock account, and $6.45 million in the additional paid-in surplus account. The 2018 balance sheet showed $4.25 million, $915,000, and $8.1 million in the same three accounts, respectively. The 2018 income statement showed an interest expense of $290,000. The company paid out $520,000 in cash dividends during 2018. If the firm's net capital spending for 2018 was $680,000, and the firm reduced its net working capital investment by $145,000, what was the firm's 2018 operating cash flow, or OCF