conversations.from: human
conversations.value: I'm stuck on this math problem: In a town, there are four primary schools. Two of them can teach 400 students at a time, and the other two 340 students at a time. How many students at a time in total, can these four primary schools teach?
  Can you help?
conversations.from: assistant
conversations.value: Two schools can teach 400 students, so in total, they can teach 2 * 400 = 800 students.
  The other two schools can teach 340 students, which gives 2 * 340 = 680 students in total.
  So all four schools can teach 800 + 680 = 1480 students at a time.