A nurse is preparing to administer propylthiouracil 300 mg/day PO in three equal doses to a client who is at 8 weeks of gestation and is experiencing hyperthyroidism. Available is propylthiouracil 50 mg/tablet. How many tablets should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)