A corridor is 32m long, and a pot of plants is placed every 4m (not at both ends), how many pots of plants should be placed in total?
一条走廊长32m，每隔4m摆放一盆植物(两端不放)，一共要放多少盆植物？
<gadget id="calculator">32 / 4</gadget>
<output>8</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<result>7</result>