A nurse is preparing to administer moxifloxacin 400 mg by intermittent IV bolus over 60 min. Available is moxifloxacin 400 mg in 450 ml. dextrose 5% drop factor of the manual IV tubing is 18 gtt/mL. The nurse should set the manual IV infusion to deliver how many gtt/min? Round to the nearest whole number. Enter numeric value only (numbers and decimal points only, no commas or labels)