Feather Friends, Inc distributes a high-quality wooden birdhouse that sells for $80 per unit. Variable expenses are $40 per unit and fixed expenses total 200000 per year. Its operating results for last year were as follows: Sales 2240000 Variable expenses 1120000 Contribution Margin 1120000 Fixed Expenses 200000 Net Operating income 920000 Answer this question independently based on the original data: Assume this year's unit sales and total sales increase by 54000 units and 4320000 respectively. If the fixed expenses do not change, how much will net operating income increase