A heparin infusion is prescribed for a client who weighs 220 pounds. After administering a bolus dose of 80 units/kg, the nurse calculates the infusion rate for the heparin solution at 18 units/kg/hour. The available solution is "Heparin Sodium 25,000 Units in 5% Dextrose Injection 250 mL". The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only. If rounding is required, round to the nearest whole number.)