A retail chain operates five stores in different locations. The chain has collected the following information from each of its stores last month $($see the table below$).$ Additionally, the chain has indicated that:

$(1)$ $$50,000$ in monthly corporate overhead $($fixed cost$)$ should be distributed evenly among the five stores $($i$.$e$.,$ $$10,000$ each$)$;

$(2)$ Labor cost per employee a month $=$ $$15,000$;

$(3)$ Monthly rent cost per square foot of floor area $=$ $$5.$