Lowwater Sailmakers manufactures sails for sailboats. The company has the capacity to produce 25,000 sails per year, but is currently producing and selling 20,000 sails per year. The following information relates to current production. If a special sales order is accepted for 2,000 sails at a price of $87 per unit, and fixed costs increase by $20,000, how would operating income be affected? (NOTE: Assume regular sales are not affected by the special order.)