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 $ 25,400 Variable expenses 13,800 Contribution margin 11,600 Fixed expenses 7,772 Net operating income $ 3,828 7.If the variable cost per unit increases by $.70, spending on advertising increases by $1,200, and unit sales increase by 250 units, what would be the net operating income? (Do not round intermediate calculations.)

Im not entering the correct formula, please help and thank you