The 2017 financial statements for Growth Industries are presented below.

INCOME STATEMENT, 2017Sales$280,000Costs190,000EBIT$90,000Interest expense18,000Taxable income$72,000Taxes (at 35%)25,200Net income$46,800Dividends$23,400Addition to retained earnings23,400

BALANCE SHEET, YEAR-END, 2017AssetsLiabilitiesCurrent assetsCurrent liabilitiesCash$4,000Accounts payable$11,000Accounts receivable9,000Total current liabilities$11,000Inventories37,000Long-term debt180,000Total current assets$50,000Stockholders' equityNet plant and equipment220,000Common stock plus additional paid-in capital15,000Retained earnings64,000Total assets$270,000Total liabilities and stockholders' equity$270,000

Sales and costs are projected to grow at 40% a year for at least the next 4 years. Both current assets and accounts payable are projected to rise in proportion to sales. The firm is currently operating at 70% capacity, so it plans to increase fixed assets in proportion to sales. Interest expense will equal 10% of long-term debt outstanding at the start of the year. The firm will maintain a dividend payout ratio of 0.50.

What is the required external financing over the next year?(Enter excess cash as a negative number with a minus sign.)