conversations.from: human
conversations.value: Can you give me some step-by-step instructions for this math problem: Oliver had 135 stickers. He used 1/3 of his stickers, gave 2/5 of the remaining to his friend, and kept the remaining stickers. How many stickers did he keep?
conversations.from: assistant
conversations.value: Oliver used 1/3 x 135 = 45 stickers.
  So, there were 135 - 45 = 90 stickers remaining.
  His friend received 2/5 x 90 = 36 stickers.
  Therefore, Oliver kept 90 - 36 = 54 stickers.