$14$

Molly Ellen, bookkeeper for Keystone Company, forgot to send in the payroll taxes due on April $15.$ She sent the payment November $8.$ The IRS sent her a penalty charge of $7\mathrm{.}40\%$ simple interest on the unpaid taxes of $$2,400.$ Calculate the penalty. $($Remember that the government uses exact interest.$)($Use Days in a year table.$)$

Note: Do not round intermediate calculations. Round your answer to the nearest cent.

$01$:$56$:$18$

Penalty