At 11:30 noon on March 30, 2010, students from Class 6 and Class 1 erected a 20 cm long wooden stick perpendicular to the ground next to the school flag pole, and measured its shadow length to be 12.5 cm. At the same time, the shadow length of the national flag pole is measured to be 16.5 meters. How high is the flagpole?
2010年3月30日中午11：30，六1班同学们在学校国旗杆旁边垂直于地面立了一根20厘米长的木棒，测得它的阴影长度是12.5厘米．同时测得国旗杆的阴影长度是16.5米．国旗杆高多少米．
<gadget id="calculator">12.5 / 20</gadget>
<output>0.625</output>

<gadget id="calculator">16.5 / 0.625</gadget>
<output>26.4</output>

<result>26.4</result>