conversations.from: human
conversations.value: Mark constructs a cube of pure gold.  The cube is 6 cm on each side.  The density of gold is 19 grams per cubic centimeter.  He buys the gold for $60 per gram.  He sells it for 1.5 times its gold value.  What was the profit?
  Solve it.
conversations.from: assistant
conversations.value: The cube is 6*6*6=216 cubic cm
  So it has a mass of 216*19=4104 grams
  So it uses 60*4104=$246240
  That means he sells it for 246240*1.5=$369360
  So he has a profit of 369360-246240=$123,120