conversations.from: human
conversations.value: Solve the math problem: Bob spends $27000 distributed between 3 schools to buy books.  He can buy 100 books for $500.  How many books can he buy per school?
conversations.from: assistant
conversations.value: He spends 27000/3=$9000
  Each book cost 500/100=$5
  So he can buy 9000/5=1800 books per school