conversations.from: human
conversations.value: Jack is a soccer player. He needs to buy two pairs of socks and a pair of soccer shoes. Each pair of socks cost $9.50, and the shoes cost $92. Jack has $40. How much more money does Jack need?
  How to solve this?
conversations.from: assistant
conversations.value: The total cost of two pairs of socks is $9.50 x 2 = $19.
  The total cost of the socks and the shoes is $19 + $92 = $111.
  Jack need $111 - $40 = $71 more.