Given the following information: Current assets = 400, Fixed assets = $500, Accounts payable = $100; notes payable =45; Long term debt = $455; equity =300; sales =$450, costs = $400 tax rate = 34%. Suppose that current assets, costs and accounts payable maintain a constant ratio to sales. If the firm is producing 80% to capacity what is the total amount of external financing needed if sales increase 25%. Assume firm pays no dividends.