Betty Gilmore plans to sell berry pies at a local farmer's market during the summer. The permit and space rental will cost her $1,500 for the season. The pies will sell for $7.00 each. Ingredients and overhead average $2.85 per pie. She also has to pay 8% of her gross sales to the markets's organizers. How many pies will she need to sell to cover her fixed costs and realize a $11,000 profit?