Boundaries, a chain of retail stores, sells books and music CDs. Condensed monthly income data are presented in the following table for November 20x4. (Ignore income taxes.)

	Downtown Store	Mall Store	Total
Sales	$	240,000		$	360,000		$	600,000
Less: Variable expenses		96,000			252,000			348,000
Contribution margin	$	144,000		$	108,000		$	252,000
Less: Fixed expenses		60,000			120,000			180,000
Operating income	$	84,000		$	(12,000	)	$	72,000

Additional Information:
	Management estimates that closing the mall store would result in a 10 percent decrease in downtown store sales, while closing the downtown store would not affect mall store sales.
	One-fourth of each stores fixed expenses would continue through December 31, 20x5, if either store were closed.
	The operating results for November 20x4 are representative of all months.

The management of Boundaries is considering a promotional campaign at the mall store that would not affect the downtown store. Annual promotional expenses at the mall store would be increased by $180,000 in order to increase mall store sales by 10 percent. What would be the effect of this promotional campaign on the company's monthly operating income during 20x5?