conversations.from: human
conversations.value: Explain how to solve this math problem: James wants to build a ladder to climb a very tall tree.  Each rung of the ladder is 18 inches long and they are 6 inches apart.  If he needs to climb 50 feet how many feet of wood will he need for the rungs?
conversations.from: assistant
conversations.value: He needs 12/6=2 rungs per foot
  So he needs 50*2=100 rungs
  Each rung is 18/12=1.5 feet
  So he needs 1.5*100=150 feet