Rubberfelt Incorporated produces floor mats for cars and trucks. The owner, Johnny Traction, asked you to assist him in estimating his maintenance costs. Together, Mr$.$ Traction and you determined that the single best cost driver for maintenance costs was machine hours. Below are data from the previous fiscal year for maintenance expense and machine hours:

Month Maintenance Expense Machine Hours

$1$ $ $3,1202,200$

$23,3102,300$

$33,4902,400$

$43,6202,430$

$53,6202,280$

$63,6802,440$

$73,6102,420$

$83,4202,390$

$93,1402,210$

$102,8802,080$

$112,7801,690$

$122,9402,070$

Using the high$-$low method, total monthly fixed cost is calculated to be: