The most recent financial statements for Zoso, Inc., are shown here (assuming no income taxes): Income Statement Balance Sheet Sales $5,100 Assets $15,000 Debt $11,000 Costs 3,420 Equity 4,000 Net income $1,680 Total $15,000 Total $15,000 Assets and costs are proportional to sales. Debt and equity are not. No dividends are paid. Next year's sales are projected to be $5,970. Required: What is the external financing needed? (Do not round your intermediate calculations.)