A nurse is preparing to administer clindamycin phosphate IM 15 mg/kg/day divided in equal doses every 6 hr to an infant who weighs 21 lb. Available is clindamycin phosphate injection 150 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)