Can someone explain how to do this?

Crane WaterWorks manufactures snorkel gear. During the past month, Washington purchased 4,140 pounds of plastic to use in its dive masks, at a cost of $6,784. The standard price for the plastic is $1.576 per pound. The company actually used 3,970 pounds of the plastic to produce 19,400 dive masks. Calculate Crane's direct materials price variance for the month. (Round answer to O decimal places, e.g. 5,275. If variance is zero, select "Not Applicable" and enter O for the amounts.) G Direct material price variance