conversations.from: human
conversations.value: Find a solution for this math problem: John buys 2 packs of gum and 3 candy bars.  Each stick of gum cost half as much as the candy bar.  If the candy bar cost $1.5 each, how much did he pay in total?
conversations.from: assistant
conversations.value: The gum cost $1.5/2=$.75 per pack
  So he pays $.75*2=$1.5 for the gum
  He pays $1.5*3=$4.5 for the candy bars
  So in total, he pays $1.5 + $4.5 = $6