LMNO Gaskets has formulated a production plan for a product to meet demand over the upcoming four quarters. Demand in each of the four quarters and production, overtime, and subcontracting capacities are reported in the table below, in addition to the feasible production plan. The relevant costs are:

Regular time production cost is $$15/$unit$.$

Overtime production cost is $$19/$unit$.$

Subcontracting cost is $$25/$unit$.$

Inventory is held at a cost of $$3/$unit$/$quarter$.$

Production Resource Demand in Quarter Capacity

Q$1$ Q$2$ Q$3$ Q$4$

Regular Time Q$1550550$

Overtime Q$118070250$

Subcontract Q$1500$

Regular Time Q$2550550$

Overtime Q$2250250$

Subcontract Q$2500500$

Regular Time Q$3550550$

Overtime Q$3110140250$

Subcontract Q$3500$

Regular Time Q$4550550$

Overtime Q$4250250$

Subcontract Q$4500500$

Demand in Quarter $73013706601440$

What is the total number of units held in inventory for the year?

What is the total regular time production cost?

What is the total overtime production cost for the year?

What is the total cost for the year?