conversations.from: human
conversations.value: Roland needs a length of thread to complete an exercise. He has a 12cm long thread but his teacher says he needs an additional three-quarters of what he has. What is the total length required?
  Find the solution.
conversations.from: assistant
conversations.value: An additional three-quarters of 12cm is needed which is 12cm*(3/4) = 9cm
  The total length required is 12cm+9cm = 21cm