Shelhorse Corporation produces and sells a single product. Data concerning that product appear below:

	Per Unit	Percent of Sales
Selling price	$ 230	100%
Variable expenses	46	20%
Contribution margin	$ 184	80%

Fixed expenses are $363,000 per month. The company is currently selling 5,800 units per month.

Required:

The marketing manager believes that a $20,000 increase in the monthly advertising budget would result in a 120 unit increase in monthly sales. What should be the overall effect on the company's monthly net operating income of this change?