conversations.from: human
conversations.value: This math problem has got me stumped: Fabian went to a park to get some fresh air. He decided to walk there for 3 hours. Every hour he covers 5 kilometers. How many more hours did Fabian need to walk to reach a total of 30 kilometers?
  Can you show me the way?
conversations.from: assistant
conversations.value: To walk 30 kilometers, Fabian would need to walk for 30 km / 5 km/hour = 6 hours.
  As he had already walked for 3 hours, he would need to walk for another 6 hours - 3 hours = 3 hours.