Please help me calculate what is missing in the table. And please include the excel formulas too.

Costello Countertop Company Production Rate (tons/ wkr) Reg. Wage Rate (S/ton) Hiring Cost ($/wkr) 2 400 500 Inventory Holding Cost (s/ton) Firing Cost (S/ 200 wkr) 1000 Regular Time Production Over- time Month Demand Sub-conract No. of Workers 10 No. Hired Inventory 0 No. Fired 12 12 8 8 6 6 January February March April May June July August September October November December 10 10 16 16 20 20 Regular Time Over- time Costs Sub- contracting Inventory Holding Hiring Firing Month January February March April May June July August September October November December 0 0 0 0 0 0 0 Total Cost = 0 Costello Countertop Company Production Rate (tons/ wkr) Reg. Wage Rate (S/ton) Hiring Cost ($/wkr) 2 400 500 Inventory Holding Cost (s/ton) Firing Cost (S/ 200 wkr) 1000 Regular Time Production Over- time Month Demand Sub-conract No. of Workers 10 No. Hired Inventory 0 No. Fired 12 12 8 8 6 6 January February March April May June July August September October November December 10 10 16 16 20 20 Regular Time Over- time Costs Sub- contracting Inventory Holding Hiring Firing Month January February March April May June July August September October November December 0 0 0 0 0 0 0 Total Cost = 0