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 Variable expenses Contribution margin Fixed expenses Net operating income 21,200 12,400 8,800 6,952 1,848 3 $ Required: What is the break-even point in unit sales? (Do not round intermediate calculations.) Break-even point units