The healthcare provider (HCP) prescribes cefazolin 800 mg IM every six hours. The available vial is labeled, "Cefazolin 1 gram," and the instructions for reconstitution state, for IM use add 2.5 mL sterile water for injection to provide a total volume of 3.0 mL. After reconstitution, the solution contains how many mg/mL? Enter numeric value only. If rounding is required, round to the nearest whole number.)