$\backslash$table$[[$Annual depreciation,$$2,500,$Annual mileage$],[$Current year's loan interest,$$650,$Miles per gallon$],[$Insurance$,$$$680,$License and registration fees$],[$Average gasoline price,$$3\mathrm{.}50$ per gallon,$0$il changes$/$repairs$]]$

a$.$ Calculate total annual operating cost of the motor vehicle.

$\backslash$table$[[$Total variable cost,$],[$Total fixed cost,$],[$Total annual operating cost,$]]$

b$.$ Calculate operating cost per mile. $($Round your answer to $2$ decimal places.$)$

Operating cost per mile