conversations.from: human
conversations.value: James decides to make a bathtub full of jello.  For every pound of water, you need 1.5 tablespoons of jello mix.  The bathtub can hold 6 cubic feet of water.  Each cubic foot of water is 7.5 gallons.  A gallon of water weighs 8 pounds.  A tablespoon of jello mix costs $0.50.  How much did he spend to fill his tub?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: The tub has 6*7.5=45 gallons
  That would weigh 45*8=360 pounds
  So he needs 360*1.5=540 tablespoons of jello mix.
  So he spent 540*.5=$270