The 2017 financial statements for Growth Industries are presented below.

INCOME STATEMENT, 2017Sales$360,000Costs230,000EBIT$130,000Interest expense26,000Taxable income$104,000Taxes (at 35%)36,400Net income$67,600Dividends$33,800Addition to retained earnings33,800

BALANCE SHEET, YEAR-END, 2017AssetsLiabilitiesCurrent assetsCurrent liabilitiesCash$5,000Accounts payable$12,000Accounts receivable10,000Total current liabilities$12,000Inventories35,000Long-term debt260,000Total current assets$50,000Stockholders' equityNet plant and equipment300,000Common stock plus additional paid-in capital15,000Retained earnings63,000Total assets$350,000Total liabilities and stockholders' equity$350,000

Sales and costs are projected to grow at 30% 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 full 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? (Negative amounts should be indicated by a minus sign.)