Trying to figure out the right numbers with an explanation if anyone can do it.

Teeswater Corp. shows the following information on its 2018 statement of comprehensive income: sales = $258,000; costs = $156,000; other expenses = $9,400; depreciation expense = $18,800; interest expense = $14,400; taxes = $17,990; dividends = $13,800. In addition, you're told that the firm issued $6,000 in new equity during 2018 and redeemed $6,000 in outstanding long-term debt. a. What is the 2018 operating cash flow? (Omit $ sign in your response.) Operating cash flow $ 74,610 b. What is the 2018 cash flow to creditors? (Omit $ sign in your response.) Cash flow to creditors $ -20,400 c. What is the 2018 cash flow to shareholders? (Omit $ sign in your response.) Cash flow to shareholders $ -7,800 d. If net fixed assets increased by $26,500 during the year, what was the addition to NWC? (Omit $ sign in your response.) Addition to NWC $ 28,200