Acitelli Corporation, which applies manufacturing overhead on the basis of machine-hours, has provided the following data for its most recent year of operations.               
| Estimated manufacturing overhead | 
$ | 
351,960
  | 
| Estimated machine-hours | 
  | 
8,400 | 
| Actual manufacturing overhead | 
$ | 
352,960 | 
| Actual machine-hours | 
  | 
8,460 | 
The estimates of the manufacturing overhead and of machine-hours were made at the beginning of the year for the purpose of computing the company's predetermined overhead rate for the year.