Paladin Furnishings generated $4 million in sales during 2016, and its year-end total assets were $3.2 million. Also, at year-end 2016, current liabilities were $500,000, consisting of $200,000 of notes payable, $200,000 of accounts payable, and $100,000 of accrued liabilities. Looking ahead to 2017, the company estimates that its assets increase by $0.80 for every $1.00 increase of sales. Paladin's profit margin is 3%, and its retention ratio is 50%. How large of a sales increase can the company achieve without having to raise funds externally?