road is 28 meters long, and a potted flower is placed every 4 meters. What is the minimum number of pots to be placed?
一条路长28米，每隔4米放一盆花，至少要放的盆数是多少盆
<gadget id="calculator">32 / 4</gadget>
<output>8</output>

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

<result>7</result>