Rondolo, Inc. is currently operating at maximum capacity. All costs, assets, and current liabilities vary directly with sales. The tax rate and the dividend payout ratio will remain constant. 

Rondolo, Inc. 2015 Income Statement ($ in millions) 

Net Sales $12,800 

Less: Cost of Goods Sold 10,400 

Depreciation 680 

Earnings Before Interest and Taxes 1,720 

Less: Interest Paid 280 

Taxable Income $1,440 

Taxes 500 

Net Income $940 

Dividends $423 

Additions to retained earnings $517 

Rondolo, Inc. 2015 Balance Sheet ($ in millions) 

Cash $520 

Accounts payable $1,810 

Accounts rec 1,080 

Long-term debt 3,600 

Inventory 3,120 

Common stock 5,000 

Total $4,720 

Retained earnings 1,790

 Net fixed assets 7,480 

Total assets $12,200 

Total liabilities & equity $12,200

How much additional debt is required if no new equity is raised and sales are projected to increase by 4% ($ in millions)?