The Stallard Corporation manufactures Product X that consumes a large amount of overhead. For the month of October Stallard produced 15,700 units of Product X and incurred actual variable overhead costs of $285,000. The standard costs developed for Product X by Stallard follow:

Standard direct labor hours per unit	3
Standard direct labor rate per hour	$15.00
Standard variable overhead hours per unit	10
Standard variable overhead rate per hour	$7.80

What was the total variable overhead variance for Product X in October?

Correct Answer: $939,600 favorable

Please explain how to get this correct answer. Show all your work please!!