Help please, and can you show me step by step what numbers you plug in to get the answers.

Randy Inc. produces and sells tablets. The company incurred the following costs for the May: Advertising cost for monthly television ads Attachable keyboard Insurance for delivery truck Factory supervisor's salary Marketing manager's salary Assembly worker wages Miscellaneous soldering material used to seal case Hourly wages for factory security guard CEO's salary Speakers $ 6,400 20,400 640 3,700 3,400 27,000 1,200 7,700 5,350 Required: Determine each of the following: 1. Direct material 2. Direct labor 3. Manufacturing head 4. Total manufacturing cost 5. Total period cost 6. Total variable cost 7. Total fixed cost