conversations.from: human
conversations.value: Marc bought 50 episodes of the show "Friends" online. Each day Marc watches 1/10 of the episodes he bought. How many days will Marc need to finish 50 episodes of the show he bought?
conversations.from: assistant
conversations.value: Marc watches 50 * 1/10 = 5 episodes a day.
  So, he will need 50 / 5 = 10 days to finish all episodes he bought.