O'Neill, Incorporated's segmented income statement for the most recent month is given below.

	Total	Store A	Store B
Sales	$159,300	$64,800	$94,500
Variable expenses	58,509	31,104	27,405
Contribution margin	100,791	33,696	67,095
Traceable fixed expenses	69,700	22,800	46,900
Segment margin	31,091	$10,896	$20,195
Common fixed expenses	23,300
Net operating income	$ 7,791

If Store B sales increase by $46,000 with no change in fixed expenses, the overall company net operating income should

increase/decrease by how much?