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 1500 units) Sales Variable expenses Contribution margin Fixed expenses Net operating income $ 22,400 12,800 9,6ee 7,968 2,632 Required: How many units must be sold to achieve a target profit of $5,616? (Do not round Intermediate calculations.) Number of units