conversations.from: human
conversations.value: Can you give me some step-by-step instructions for this math problem: Joseph gave 23 cards to each of his 15 students and had 12 cards left. How many cards did Joseph have at first?
conversations.from: assistant
conversations.value: He gave 23 cards each to 15 students for a total of 23*15 = 345 cards
  He has 12 cards left, so originally the number of cards was 345+12 = 357 cards