William Diesel owns the Fredonia Barber Shop. He employs 5 barbers and pays each a base salary of $1,510 per month. One of the barbers serves as the manager and receives an extra $580 per month. In addition to the base salary, each barber also receives a commission of $8.40 per haircut. Other costs are as follows. William currently charges $18.00 per haircut. Determine the unit variable costs per haircut and the total monthly fixed costs. (Round variable costs to 2 decimal places, e.g. 2.25.) Total variable cost per haircut $ Total fixed costs $