A firm is currently operating at $84$ percent of capacity. Annual sales are $$28,400$ and net income is $$2,250.$ The firm has current liabilities of $$2,700,$ long$-$term debt of $$9,800,$ net fixed assets of $$16,900,$ net working capital of $$5,000,$ and owners' equity of $$12,100.$ All costs and net working capital vary directly with sales. The tax rate and net profit margin will remain constant. The dividend payout ratio is constant at $40$ percent. Sales are projected to increase by $12$ percent and no new equity is expected to raised.

How much additional debt is required?