conversations.from: human
conversations.value: A dental office gives away 2 toothbrushes to every patient who visits.  His 8 hour days are packed and each visit takes .5 hours.  How many toothbrushes does he give in a 5 day work week?
  Give me a clear explanation.
conversations.from: assistant
conversations.value: Each day he does 8/.5=16 visits
  So he does 16*5=80 visits a week
  That means he gives away 80*2=160 toothbrushes a week