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	$ 70,000
Variable expenses	38,500
Contribution margin	31,500
Fixed expenses	23,310
Net operating income	$ 8,190

If the variable cost per unit increases by $1, spending on advertising increases by $1,600, and unit sales increase by 220 units, what would be the net operating income?