conversations.from: human
conversations.value: Can you explain how to solve this math problem: There are 30 spaces for each vehicle in a parking lot. A caravan takes up a total of 2 spaces of parking space. How many vehicles can still park if there are 3 caravans currently parking?
conversations.from: assistant
conversations.value: The three caravans used up 3x2= 6 parking spaces in the parking lot.
  Therefore, 30-6= 24 vehicles can still park in the parking lot.