AirPro Corp. reports the following for November. Actual total factory overhead incurred $ 28,175 Standard factory overhead: Variable overhead $ 3.10 per unit produced Fixed overhead ($12,000/12,000 predicted units to be produced) $ 1 per unit Predicted units produced 12,000 units Actual units produced 9,800 units Compute the controllable overhead variance for November. (Round cost per unit to 2 decimal places.