I need help with the third step on this question, i've done with the first two step..

Weston Products manufactures an industrial cleaning compound that goes through three processing departmentsGrinding, Mixing, and Cooking. All raw materials are introduced at the start of work in the Grinding Department. The Work in Process T-account for the Grinding Department for May is given below:

Work in ProcessGrinding Department

Inventory, May 1	115,280		Completed and transferred to the Mixing Department	?
Materials	560,360
Conversion	338,664
Inventory, May 31	?

The May 1 work in process inventory consisted of 44,000 pounds with $69,520 in materials cost and $45,760 in conversion cost. The May 1 work in process inventory was 100% complete with respect to materials and 80% complete with respect to conversion. During May, 318,000 pounds were started into production. The May 31 inventory consisted of 102,000 pounds that were 100% complete with respect to materials and 70% complete with respect to conversion. The company uses the weighted-average method to account for units and costs.

Required:

1.	Determine the equivalent units of production for May.

2.	Determine the costs per equivalent unit for May. (Round your answers to 2 decimal places.)

3.	Determine the cost of the units completed and transferred to the Mixing Department during May. (Do not round your intermediate calculations.)