In order to beautify the environment, students put potted flowers every 3 meters along the 30-meter-long corridor (both ends should be placed), how many potted flowers do you need?
为了美化环境，同学们沿长30米的走廊每隔3米放一盆花(两端都要放)，需要多少盆花？
<gadget id="calculator">30 / 3</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<result>11</result>