A cylindrical iron drum with a capacity of 502.4 liters has a bottom diameter of 0.8 meters. What is the height of the iron drum in meters?
一个容量为502.4升的圆柱形铁桶，底面直径是0.8米，铁桶高为多少米．
<gadget id="calculator">0.4 ** 2</gadget>
<output>0.16</output>

<gadget id="calculator">3.14 * 0.16</gadget>
<output>0.5024</output>

<gadget id="calculator">502.4 / 1_000 / 0.5024</gadget>
<output>1</output>

<result>1</result>