Zigs Industries had the following operating results for 2015: sales = $28312; cost of goods sold = $17572; depreciation expense = $4574; interest expense = $2352; dividends paid = $1752. At the beginning of the year, net fixed assets were $19629, current assets were $5237, and current liabilities were $3824. At the end of the year, net fixed assets were $20667, current assets were $7483, and current liabilities were $3572. The tax rate for 2015 was 35 percent. What is operating cash flow (OCF) for 2015?