A primary school student measures the height of a telegraph pole. He measures the shadow length of the telegraph pole on the flat ground as 5.4 meters. At the same time, he stands a 2-meter-long bamboo pole upright on the ground and measures the shadow length as 1.8 meters. How many meters is the height of the telegraph pole?
小学生测量电线杆的高，他量得电线杆在平地上的影子长为5.4米，同时，把2米长的竹竿直立在地上，量得影长为1.8米，电线杆高多少米？
<gadget id="calculator">5.4 * 2</gadget>
<output>10.8</output>

<gadget id="calculator">10.8 / 1.8</gadget>
<output>6</output>

<result>6</result>