conversations.from: human
conversations.value: James can make 4 hats out of one yard of velvet. He needs three yards of velvet to make a cloak. How much velvet does he need to make 6 cloaks and 12 hats?
  How to solve this?
conversations.from: assistant
conversations.value: First find the total amount of velvet James uses on the hats: 12 hats / 4 hats/yard = 3 yards
  Then find the total amount of velvet he needs to make the cloaks: 6 cloaks * 3 yards/cloak = 18 yards
  Then add those two amounts to find the total amount of velvet he needs: 3 yards + 18 yards = 21 yards