Foles Company produces and sells a single product and 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 $ 24,500 13,500 Variable expenses 11,000 Contribution margin Fixed expenses 7,700 Net operating income 3,300 Required: If the variable cost per unit increases by $1.50, spending on advertising increases by $2,000, and unit sales increase by 250 units, what would be the net operating income? (Do not round intermediate calculations.) Net operating income