X Company's 2018 budgeted cost function for variable overhead was C=$9.40X, where X is the number of units produced, and its budgeted cost function for fixed overhead was C=$237,200. The following information is also available for 2018:

	Master	Actual
	Budget	Results
Production	10,700 units	11,500 units
Total variable costs	$100,580	$87,158
Total fixed costs	$237,200	$235,918

What was the total overhead flexible budget variance for 2018 [a positive number means a favorable variance and a negative number means an unfavorable variance]?