La Corter's Dome has total assets of RM5,820, total debt of RM2,760 and total equity of RM3,652.90. Assets and costs are proportional to sales. Debt and equity are not. No dividends or taxes are paid. In the following year, the firm's projected sales growth is 21% and its projected assets is RM7 042.20. What is the amount of the external financing needed?