conversations.from: human
conversations.value: Steve owns a lake shop that sells fish. He has a stock of 200 fish. He sells 50 fish and because his refrigerators stop working a third of the remaining fish become spoiled. A new stock of 200 more fish arrives. How many fish does he have in stock now?
  Give me a clear explanation.
conversations.from: assistant
conversations.value: If he had 200 fish and sells 50, he is left with 200 - 50 = 150 fish
  If a third of them get spoiled 1/3 * 150 = 50 fish get spoiled
  The remaining number of fish is now 150 - 50 = 100
  He then gets 200 more to make 100 + 200 = 300 fish