Calculate gross pay, federal taxable income, social security tax, and medicare tax

An employee works 50 hours (10 of which were overtime hours) during a workweek in December of 2021. He earns $9,500/month, with his employer paying 1.5 times the regular rate of pay for overtime hours. To date, he has earned $114,500 during the year. He has requested that his employer withhold 13% of gross pay to contribute to a 403(b) plan.