The net income is RO 20 million. Last year's sales were RO 180 million. The total assets represent two-thirds of total sales. The accounts payables represent 20% of total assets. The accruals is RO 1 million and the notes payable is RO 2 million. The assets and costs vary directly with sales. The retained earnings is RO 8 million. The firm operates at full capacity. If the sales growth rate is 10%, how much external financing is needed? Interpret.