A nurse is preparing to administer cefoxitin 400 mg by intermittent IV bolus over 1 hr to a school-age child. Available is cefoxitin 400 mg in 50 mL dextrose 5% in water. The nurse should ensure the IV pump is set to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)