Vitex, Inc. manufactures a popular consumer product and it has provided the following data excerpts from its standard cost system:

Inputs	(1) Standard Quantity or Hours		(2) Standard Price or Rate			Standard Cost (1) (2)
Direct materials	2.30	pounds	$	16.30	per pound	$	37.49
Direct labor	1.00	hours	$	15.10	per hour	$	15.10
Variable manufacturing overhead	1.00	hours	$	9.50	per hour	$	9.50
Total standard cost per unit						$	62.09

	Total		Variances Reported
	Standard Cost*		Price or Rate			Quantity or Efficiency
Direct materials	$	712,310	$	13,253	F	$	32,600	U
Direct labor	$	286,900	$	4,000	U	$	15,100	U
Variable manufacturing overhead	$	180,500	$	4,000	F	$	?	U

*Applied to Work in Process during the period.

The company's manufacturing overhead cost is applied to production on the basis of direct labor-hours. All of the materials purchased during the period were used in production. Work in process inventories are insignificant and can be ignored.

6. How much actual variable manufacturing overhead cost was incurred during the period?

an explanation plz.