conversations.from: human
conversations.value: A cup of dog food weighs 1/4 of a pound.  If Mike has 2 dogs that each eat 6 cups of dog food twice a day how many 20 pound bags of dog food does he need to buy a month?
  Find the solution.
conversations.from: assistant
conversations.value: Each dog eats 6*2=12 cups of food a day
  His two dogs eat 12*2=24 cups a day
  Thus they eat 24/4=6 pounds a day
  So they eat 6*30=180 pounds a month
  So he needs to buy 180/20=9 bags of food