For the following loan, find $($a$)$ the finance charge and $($b$)$ the APR. Use a TVM solver to find the APR.

Sebastian purchased a tablet for $$545$ and will make $12$ monthly payments of $$46\mathrm{.}98$ each.

$($a$)$ The finance charge is $

$($Round to the nearest cent as needed

$($b$)$ The annual percentage rate is $.($Round to the nearest hundredth as needed.$)$