A firm has common stock of $$83,$ paid$-$in surplus of $$190,$ total liabilities of $$375,$ current assets of $$320,$ and fixed assets of $$530.$ What is the amount of the shareholders' equity? $$648$ $$505$ $$155$ $$850$ $$475$ A firm has common stock of $$83,$ paid$-$in surplus of $$190,$ total liabilities of $$375,$ current assets of $$320,$ and fixed assets of $$530.$ What is the amount of the shareholders' equity? O $$648$ O s$505$ O $$155$ O $$850$ O $$475$