A company produces and sells a single product. Data concerning that product appear below: Per Unit Percent of Sales Selling price $ 160 100% Variable expenses 80 50% Contribution margin $ 80 50% The company is currently selling 6,400 units per month. Fixed expenses are $217,000 per month. The marketing manager believes that a $7,100 increase in the monthly advertising budget would result in a 160 unit increase in monthly sales. What should be the overall effect on the company's monthly net operating income of this change?