conversations.from: human
conversations.value: A toy car factory made 60 cars yesterday. Today, they made twice the number of cars than yesterday. How many toy cars did the factory make?
  How to solve this?
conversations.from: assistant
conversations.value: They made 60 x 2 = 120 cars today.
  So, the factory made a total of 60 + 120 = 180 cars.