Really struggling with this one.......please help with part 3,4,5 with detailed explanations and workings

The following information concerns production in the Baking Department for March. All direct materials are placed in process at the beginning of production ACCOUNT Work in Process-Baking Department ACCOUNT NO. Balance Date Item Debit Credit Debit Credit Mar. 1 Bal., 4,200 units, 4/5 completed 10,080 31 Direct materials, 75,600 units 136,080 146,160 31 Direct labor 38,460 184,620 31 Factory overhead 21,636 206,256 31 Goods finished, 76,500 units 198,732 7,524 31 Bal. ? units, 3/5 completed 7,524 a. Based on the above data, determine each cost listed below. Round "cost per equivalent unit" answers to the nearest cent. 1. Direct materials cost per equivalent unit. 1.80 2. Conversion cost per equivalent unit. 0.80 3. Cost of the beginning work in process completed during March. 672 4. Cost of units started and completed during March. 5. Cost of the ending work in process. $ s