Weiland Co. shows the following information on its 2016 income statement: sales = $162,500; costs = $80,000; other expenses = $3,300; depreciation expense = $9,000; interest expense = $6,500; taxes = $22,295; dividends = $8,150. In addition, you're told that the firm issued $4,500 in new equity during 2016 and redeemed $7,700 in outstanding long-term debt.

a. What is the 2016 operating cash flow? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.) Operating cash flow $ 56905

b. What is the 2016 cash flow to creditors? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.) Cash flow to creditors $ 14200

c. What is the 2016 cash flow to stockholders? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.) Cash flow to stockholders $ 3650

d. If net fixed assets increased by $21,200 during the year, what was the addition to NWC? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.) Addition to net working capital $

I don't know how to figure out if net fixed assets increased by 21,200 during the year, what was the addition to NWC