conversations.from: human
conversations.value: I'm stuck on this math problem: A marathon is 26 miles.  He can run the first 10 miles in 1 hour.  For the remaining miles he runs at 80% that pace.  How long does the race take?
  Can you help?
conversations.from: assistant
conversations.value: There are 26-10=16 miles left for the rest of the race
  He runs 10*.8=8 miles per hour
  So it takes him 16/8=2 hours
  So in total it takes 1+2=3 hours