Xiao Ming measured the height of the flagpole. He measured the shadow length of the flagpole on the flat ground as 8.5 meters. At the same time, he stood the 2-meter-long bamboo pole upright on the ground and measured the shadow length as 1.7 meters. How many meters is the flagpole high?
小明测量旗杆的高度，他量得旗杆在平地上的影长为8.5米，同时他把2米长的竹杆直立在地上，量得影长1.7米，旗杆高多少米？
<gadget id="calculator">2 / 1.7</gadget>
<output>1.176471</output>

<gadget id="calculator">1.176471 * 8.5</gadget>
<output>10.000004</output>

<result>10.000004</result>