conversations.from: human
conversations.value: This math problem has got me stumped: Stephen borrowed $300 from his sister and promised to return it with an additional 2% of the money he owed. For 11 months Stephen will give his sister $25 per month and the remaining amount, including the interest, will be paid on the twelfth month. How much will Stephen pay in the twelfth month?
  Can you show me the way?
conversations.from: assistant
conversations.value: Stephen will pay an additional $300 x 2/100 = $6.
  He should return a total of $300 + $6 = $306.
  For eleven months Stephen will pay a total of $25 x 11 = $275.
  Therefore, Stephen will pay 306 - 275 = $31 on the twelfth month.