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?
The three caravans used up 3x2= 
<gadget id="calculator">3*2</gadget>
<output>6</output>
6 parking spaces in the parking lot.
Therefore, 30-6= 
<gadget id="calculator">30-6</gadget>
<output>24</output>
24 vehicles can still park in the parking lot.

<result>24</result>