Sally is thinking about starting a new business. The company would require $700,000 of assets, financed with 40% debt and 60% equity. She will go forward only if she thinks the firm can provide an ROE of at least 15.4%. Operating at a profit margin of 12%, what is the minimum amount of sales that must be expected to support starting the business? Your answer should be between 472000 and 595000, rounded to even dollars (although decimal places are okay), with no special characters.