Trey Morgan is an employee who is paid monthly. For the month of January of the current year, he earned a total of $$4,540.$ The Federal Insurance Contributions Act $($FICA$)$ tax for social security is $6\mathrm{.}2\%$ of the first $$137,700$ earned each calendar year, and the Federal Insurance Contributions Act $($FICA$)$ tax rate for Medicare is $1\mathrm{.}45\%$ of all earnings for both the employee and the employer. The amount of federal income tax withheld from his earnings was $$680\mathrm{.}70.$ His net pay for the month is: