i need help working through this! i am stuck.

3. Definitions of manufacturing concepts
Interstate Manufacturing produces brass fasteners and incurred the following costs for the year just ended:
Materials and supplies used
Brass $75,000
Repair parts 16,000
Machine lubricants 9,000
Wages and salaries Machine operators 128,000
Production supervisors 64,000
Maintenance personnel 41,000
Other factory overhead Variable 35,000
Fixed 46,000
Sales commissions 20,000

Compute:
a. Total direct materials consumed
b. Total direct labor
c. Total prime cost
d. Total conversion cost