I am having some trouble with this problem, I really don't know where to start, I usually don't use the tutor questions but I really need some help on this...How do I find out the missing numbers?

Several items are omitted from the income statement andcost of goods manufacturedstatement data for two different companies for the month of December:

Materials inventory, December 1 Materials inventory, December 31 Materials purchased Cost of direct materials used in production Direct labor Factory overhead Total manufacturing costs incurred in December Total manufacturing costs Work in process inventory, December 1 Work in process inventory, December 31 Cost of goods manufactured Finished goods inventory, December 1 Finished goods inventory, December 31 Sales Cost of goods sold Gross profit Operating expenses Net income On Company $86,660 (a) 220,120 232,250 326,710 101,390 0?) 826,740 166,390 140,390 (C) 146,460 153,390 1,277,370 00 (a) 166,390 (0 Off Company $110,060 124,370 (a) (b) 247,640 123,270 712,090 977,330 265,240 (C) 705,460 123,270 (d) 1,100,600 712,090 (6) 0') 244,330 1. Determine the amounts of the missing items, identifying them by letter. Enter all amounts as positive numbers. Letter On Company Off Company a. $[:] $:] On Company Statement of Cost of Goods Manufactured For the Month Ended December 31 Direct materials: 7 $:] " [:1 - $3 " [:1 .. $C] " [:1 "' :1 Total manufacturing costs incurred during December Q Total manufacturing costs $:] [:1 :1 v 7 $ 3. Prepare On Company's income statement for December. 0n Company Income Statement For the Month Ended December 31 " D Cost of goods sold: 7 35:] " [:1 " $C] " [:1 \"" C] \"" $[:1 "' :1 "' $C]