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

	Per Unit				Percent of Sales
Selling price	$	160				100	%
Variable expenses		40				25	%
Contribution margin	$	120				75	%

Fixed expenses are $345,000 per month. The company is currently selling 4,000 units per month.

The marketing manager believes that a $19,000 increase in the monthly advertising budget would result in a 140 unit increase in monthly sales.

Required:

What should be the overall effect on the company's monthly net operating income of this change? (Negative amount should be indicated by a minus sign.)

Change in Net Operating Income: