Li Ming is 1.5 meters tall. One morning in the sun, he measured the shadow length of 2 meters. At the same time, he measured the shadow length of a telegraph pole on the flat ground as 18 meters. Find the height of the telegraph pole. (Solve with ratio)
李明身高1.5米，一天上午在阳光下，量得它的影长2米，同时量得一根电线杆在平地上的影长为18米，求电线杆的高度．(用比例解)
<gadget id="calculator">1.5 / 2</gadget>
<output>0.75</output>

<gadget id="calculator">0.75 * 18</gadget>
<output>13.5</output>

<result>13.5</result>