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 $ 75,000

Variable expenses 45,000

Contribution margin 30,000

Fixed expenses 22,800

Net operating income $ 7,200

If the variable cost per unit increases by $1, spending on advertising increases by $1,650, and unit sales increase by 230 units, what would be the net operating income? (Round "Per Unit" calculations to 2 decimal places.)