Nancy's Stove$-$Top Popcorn currently has three full$-$time employees who are each paid $ $1,500$ per month. An employee can only work a maximum of $100$ hours per month because production normally takes place at night. They do receive $ $1,500$ even if they do not work $100$ hours, however. Part$-$time employees can be hired at a cost of $ $25$ per hour. Nancy's Stove$-$Top Popcorn has forecasted that demand for the next six months will be as shown below. What is the total labor cost if Nancy relies on part$-$time employees to meet additional demand? $[$ $ $70000$; $ $53000$; $ $43500$; $ $65000]$