Bellfont Company produces door stoppers. August production costs are below:

Door Stoppers produced                    70,000

Direct material (variable)                                           $20,000

Direct labor (variable)                                             40,000

Supplies (variable)                                                     20,000

Supervision (fixed)                                                      26,800

Depreciation (fixed)                                                   23,900

Other (fixed)                                                                4,300

In September, Bellfont expects to produce 100,000 door stoppers. Assuming no structural changes, what is Bell font production cost per door stopper for September