conversations.from: human
conversations.value: Can you walk me through the solution of: John buys 10 packs of magic cards.  Each pack has 20 cards and 1/4 of those cards are uncommon.  How many uncommon cards did he get?
conversations.from: assistant
conversations.value: Each pack has 20/4 = 5 uncommons
  So he got 10*5 = 50 uncommons