The circumference of the circular swimming pool is 120 meters long. If a lamp is installed every 12 meters along this circle, how many lamps need to be installed in total?
圆形游泳池的一周全长120米．如果沿着这一圈每隔12米安装一盏灯，一共需要安装多少盏灯．
<gadget id="calculator">120 / 12</gadget>
<output>10</output>

<result>10</result>