conversations.from: human
conversations.value: Winwin won $50 in a lottery. She paid 20% for the tax and she paid $5 for the processing fee. How much was she able to take home?
  Solve it.
conversations.from: assistant
conversations.value: Winwin paid $50 x 20/100 = $10 for the tax.
  So, she has $50 - $10 = 40 after paying the tax.
  Therefore, Winwin was able to take home $40 - $5 = $35 after she paid for the processing fee.