Crane Incasements manufactures protective cases for MP$3$ players. During November, the company$$s workers clocked $720$ more direct labor hours than the flexible budget amount of $25,900$ hours to complete $109,700$ cases for the Christmas season. All workers were paid $$8\mathrm{.}63$ per hour, which was $$0\mathrm{.}47$ less than the standard wage rate.

Calculate Crane$$s direct labor efficiency variance.