Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units): Sales $ 25,700 Variable expenses 13,900 Contribution margin 11,800 Fixed expenses 7,788 Net operating income $ 4,012 Required: How many units must be sold to achieve a target profit of $7,906? (Do not round intermediate calculations.)