conversations.from: human
conversations.value: There are 48 crayons in the box.  Kiley takes 1/4 of them away.  Joe takes away half of the remaining crayons, how many crayons are left?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: Kiley takes 48/4=12 crayons
  48-12=36 crayons remain
  Joe takes 36/2=18 crayons
  36-18=18 crayons left