How do I work this out?

Company A has the following information on its 2016 income statement:

Sales = $204,500; costs = $76,000; other expenses = $7,950; depreciation expense = $20,800; interest expense = $7,500; taxes = $29,980 (with 1,150 deferred); dividends = $16,000.

In addition, the firm issued $8,390 in new equity during the year and redeemed $5,150 in outstanding long-term debt. Answer the following questions:

1) What is the 2016 operating cash flow? 2) What is the 2016 cash flow to creditors? 3) What is the 2016 cash flow to stockholders? 4) If net fixed assets increased by $32,100 during the year, what was the change to net working capital (NWC)?