Zigs Industries had the following operating results for 2015: sales = $26400; cost of goods sold = $17192; depreciation expense = $4806; interest expense = $2144; dividends paid = $1990. At the beginning of the year, net fixed assets were $15365, current assets were $5649, and current liabilities were $3166. At the end of the year, net fixed assets were $20901, current assets were $7253, and current liabilities were $3069. The tax rate for 2015 was 33 percent. What is operating cash flow (OCF) for 2015?