On one side of a 24-meter corridor, put a potted flower every 3 meters (put at both ends), how many potted flowers are needed in total.
在一条24米的走廊一侧，每隔3米放一盆花(两端都放)，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>

<result>9</result>