A 3m long bamboo pole is erected beside the water tower. The length of the bamboo pole’s shadow is measured to be 2.4m. At the same time, the length of the water tower’s shadow is measured to be 19.5m. How many meters is the water tower’s height?
水塔边立一根3m长的竹竿，测得竹竿影长2.4m，同时测得水塔影长19.5m，水塔高多少米？
<gadget id="calculator">3 * 19.5</gadget>
<output>58.5</output>

<gadget id="calculator">58.5 / 2.4</gadget>
<output>24.375</output>

<result>24.375</result>