Please show work. Thanks!

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

	Per Unit		Percent of Sales
Selling price	$	250	100%
Variable expenses		50	20%
Contribution margin	$	200	80%

Fixed expenses are $170,000 per month. The company is currently selling 1,600 units per month.

Management is considering using a new component that would increase the unit variable cost by $35. Since the new component would improve the company's product, the marketing manager predicts that monthly sales would increase by 300 units.

Required:

What should be the overall effect on the company's monthly net operating income of this change if fixed expenses are unaffected? (Negative amount should be indicated by a minus sign. Omit the "$" sign in your response.)

FIND: Change in net operating income

$