Weiland Co$.$ shows the following information on its $2019$ income statement: sales $=$ $$156,000$; costs $=$ $$81,300$; other expenses $=$ $$4,600$; depreciation expense $=$ $$10,300$; interest expense $=$ $$7,800$; taxes $=$ $$18,200$; dividends $=$ $$7,500.$ In addition, you're told that the firm issued $$3,200$ in new equity during $2019$ and redeemed $$5,100$ in outstanding long$-$term debt. a$.$ What is the $2019$ operating cash flow? b$.$ What is the $2019$ cash flow to creditors? c$.$ What is the $2019$ cash flow to stockholders? d$.$ If net fixed assets increased by $$20,550$ during the year, what was the addition to NWC$?$