conversations.from: human
conversations.value: Simone ate 1/2 of an apple each day for 16 days. Lauri ate 1/3 of an apple each day for 15 days. How many apples did the two girls eat altogether?
  How to solve this?
conversations.from: assistant
conversations.value: Simone = (1/2) * 16 = 8
  Lauri = (1/3) * 15 = 5
  8 + 5 = 13
  Together they ate 13 apples.