he following information is available for the first year of operations of Creston Inc., a manufacturer of fabricating equipment:

Sales	$	12,450,000
Gross profit		5,231,500
Indirect labor		412,500
Indirect materials		181,100
Other factory overhead		814,900
Materials purchased		4,150,000
Total manufacturing costs for the period		7,927,800
Materials inventory, end of period		291,800

This information has been collected in the Microsoft Excel Online file. Open the spreadsheet, perform the required analysis, and input your answers in the questions below.

July 3
July 10
July 14
July 18
July 27
July 31 Admin. sal.
July 31 Supplies
July 31 Prof. sal.
July 31 Billed
July 31 Cost

b. How much office overhead is over- or underapplied? Enter your answer as a positive number.

c. Determine the gross profit on the Obsidian case, assuming that over- or underapplied office overhead is closed monthly to cost of services.