Pittsburgh Aluminum Company uses a process cost system to record the costs of manufacturing rolled aluminum, which consists of the smelting and rolling processes. Materials are entered from smelting at the beginning of the rolling process. The inventory of Work in ProcessRolling on September 1 and debits to the account during September were as follows:

I am having a lot of trouble with this assignment for my accounting course. I don't understand how you calculate finished goods in the Work in Process- Rolling Department at the very beginning and I've been stumped for hours. If anyone could help me and perhaps leave some formulas to get accurate calculations I would greatly appreciate it! :)

Work in Process Account Data for Two Months; Cost of Production Reports Pittsburgh Aluminum Company uses a process cost system to record the costs of manufacturing rolled aluminum, which consists of the smelting and rolling processes. Materials are entered from smelting at the beginning of the rolling process. The inventory of Work in Process-Rolling on September 1 and debits to the account during September were as follows: Bal., 800 units, 20% completed: Direct materials (800 x $4.60) $ 3,680 Conversion (800 x 20% x $1.90) 304 $ 3,984 From Smelting Department, 18,560 units $87,232 Direct labor 22,724 12,236 Factory overhead During September, 800 units in process on September 1 were completed, and of the 18,560 units entering the department, all were completed except 2,000 units that were 60% completed. Charges to Work in Process-Rolling for October were as follows: From Smelting Department, 21,300 units $104,370 Direct labor 30,030 Factory overhead 16,170 During October, the units in process at the beginning of the month were completed, and of the 21,300 units entering the department, all were completed except 1,000 units that were 90% completed. Required: the balance as of September 1 in a four-co unt for Work in Process-Rolling. Record the debits the credits in the account f September. Construct a cost of oduction report and present computations for determining (a) equivalent units of production for materials and conversion, (b) costs per equivalent unit, (c) cost of goods finished, differentiating between units started in the prior period and units started and finished in September, and (d) work in process inventory. If an amount box does not require an entry, leave it blank. Required: 1. Enter the balance as of September 1 in a four-column account for Work in Process-Rolling. Record the debits and the credits in the account for September. Construct a cost of production report and present computations for determining (a) equivalent units of production for materials and conversion, (b) costs per equivalent unit, (c) cost of goods finished, differentiating between units started in the prior period and units started and finished in September, and (d) work in process inventory. If an amount box does not require an entry, leave it blank. ACCOUNT Work in Process-Rolling Department ACCOUNT NO. BALANCE DATE ITEM POST. REF. DEBIT CREDIT DEBIT CREDIT Sept. 1 Bal., 800 units, 20% completed 0 0 3,984 0 Sept. 30 Smelting Dept., 18,560 units at $4.7 87,232 0 91,216 0 Sept. 30 Direct labor 22,724 o 113,940 o Sept. 30 Factory overhead 12,236 o 126,176 0 Sept. 30 Finished goods 0 52,272 x 1,368 X 0 Sept. 30 Bal., 2,000 units, 60% completed o 0 0 16,560 x o If an amount is zero, enter in a zero "0". Round cost per unit answers to the nearest cent. Pittsburgh Aluminum Company Cost of Production Report-Rolling Department For the Month Ended September 30 Whole Units Equivalent Units Units Direct Materials (a) Conversion (a) 800 18,560 19,360 Units charged to production: Inventory in process, September 1 Received from Smelting Department Total units accounted for by the Rolling Department Units to be assigned costs: Inventory in process, September 1 Started and completed in September Transferred to finished goods in September Inventory in process, September 30 Total units to be assigned costs 800 0 640 Costs Costs Direct Materials Conversion Total Costs Cost per equivalent unit: Total costs for September in Rolling Department 800 X 160 X Total equivalent units Cost per equivalent unit (b) Costs assigned to production: Inventory in process, September 1 Costs incurred in September Total costs accounted for by the Rolling Department Costs allocated to completed and partially completed units: Inventory in process, September 1 balance (c) To complete inventory in process, September 1 (c) Cost of completed September 1 work in process Started and completed in September (c) Transferred to finished goods in September (c) Accounting numeric field Inventory in process, September 30 (d) Total costs assigned by the Rolling Department 2. Provide the same information for October by recording the October transactions in the four-column work in process account. Construct a cost of production report, and present the October computations (a through d) listed in part (1). If an amount box does not require an entry, leave it blank. ACCOUNT Work in Process-Rolling Department ACCOUNT NO. Balance DATE ITEM POST. REF. DEBIT CREDIT DEBIT CREDIT October 1 Balance October 31 Smelting Dept., 21,300 units at $4.9 October 31 Direct labor October 31 Factory overhead October 31 Finished goods October 31 Bal., 1,000 units, 90% completed If an amount is zero, enter in a zero "0". Round cost per unit answers to the nearest cent. Pittsburgh Aluminum Company Cost of Production Report-Rolling Department For the Month Ended October 31 Whole Units Equivalent Units Units Direct Materials (a) Conversion (a) Units charged to production: Inventory in process, October 1 Received from Smelting Department Total units accounted for by the Rolling Department Units to be assigned costs: Inventory in process, October 1 Started and completed in October Transferred to finished goods in October Inventory in process, October 31 Total units to be assigned costs Costs Costs Direct Materials Conversion Total Costs Cost per equivalent unit: Total costs for October in Rolling Department Total equivalent units Cost per equivalent unit (b) $ Costs assigned to production: Inventory in process, October 1 Costs incurred in October Total costs accounted for by the Rolling Department Costs allocated to completed and partially completed units: Inventory in process, October 1 balance (c) To complete inventory in process, October 1 (c) Cost of completed October 1 work in process Started and completed in October (c) Transferred to finished goods in October (c) Inventory in process, October 31 (d) Accounting numeric field Total costs assigned by the Rolling Department from August to October. The cost per equivalent unit for conversion costs from August to October. These changes be investigated for their underlying causes, and any 3. The cost per equivalent unit for direct materials necessary corrective actions should be taken