The path between the library and the teaching building is 24 meters away. Put a pot of flowers every 3 meters on the side of the path. If you put them on both sides, how many potted flowers will you need?
图书馆距离教学楼的小路有24米，在小路边每隔3米放一盆花，如果两边都放，一共需要多少盆花．
<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<result>18</result>