The 2017 balance sheet of Kerbers Tennis Shop, Incorporated, showed $2.35 million in long-term debt, $750,000 in the common stock account, and $6.4 million in the additional paid-in surplus account. The 2018 balance sheet showed $3.5 million, $945,000, and $8.55 million in the same three accounts, respectively. The 2018 income statement showed an interest expense of $210,000. The company paid out $580,000 in cash dividends during 2018. If the firm's net capital spending for 2018 was $710,000, and the firm reduced its net working capital investment by $175,000, what was the firm's 2018 operating cash flow, or OCF?