A nurse is providing care for a patient who has deep vein thrombosis. The patient is prescribed heparin, which is to be administered via continuous IV infusion at a rate of 1,200 units/hr. If the available heparin is 25,000 units in 500 mL DSW, how many mL/hr should the IV pump be set to deliver? (Round your answer to the nearest tenth or whole number. Use a leading zero if it applies. Do not use a trailing zero.)