Place a row of flower pots next to a park path. The distance between every two potted flowers is 4 meters, and a total of 25 pots have been placed. Now it is changed to place one pot every 6 meters, so how many potted flowers do not need to be moved.
在一条公园小路旁边放一排花盆．每两盆花之间距离为4米，共放了25盆，现在要改成每6米放一盆，则有多少盆花不必搬动．
<gadget id="calculator">25 - 1</gadget>
<output>24</output>

<gadget id="calculator">24 * 4</gadget>
<output>96</output>

<gadget id="calculator">96 / 12</gadget>
<output>8</output>

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

<result>9</result>