A corridor is 32 meters long, and a potted flower is placed every 4 meters, at least how many potted flowers should be placed.
一条走廊长32米，每隔4米放一盆花，至少要放多少盆花．
<gadget id="calculator">32 / 4</gadget>
<output>8</output>

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

<result>7</result>