Predetermined factory overhead rate

Poehling Medical Center has a single operating room that is used by local physicians to perform surgical procedures. The cost of using the operating room is accumulated by each patient procedure and includes the direct materials costs $($drugs and medical devices$),$ physician surgical time, and operating room overhead. On January $1$ of the current year, the annual operating room overhead is estimated to be:

Disposable supplies $$382,300$

Depreciation expense $95,700$

Utilities $40,800$

Nurse salaries $355,300$

Technician wages $161,900$

Total operating room overhead $$1,036,000$