conversations.from: human
conversations.value: This math problem has got me stumped: An eraser costs $2 and a pencil costs $3. How much do 6 erasers and 8 pencils cost?
  Can you show me the way?
conversations.from: assistant
conversations.value: Six erasers cost $2/eraser x 6 erasers = $12.
  Eight pencils cost $3/pencil x 8 pencils = $24.
  So, 6 erasers and 8 pencils cost $12 + $24 = $36.