cuboid pool is 8 meters long, 5 meters wide, and 3.14 meters deep. The diameter of a water outlet pipe is 40 cm, if the water flow rate is 10 meters per minute, how many minutes can it be discharged?
一个长方体水池的长8米，宽5米，水深3.14米．一个出水管的直径是40厘米，如果每分钟的水流速度是10米，多少分钟可以放完？
<gadget id="calculator">8 * 5 * 3.14</gadget>
<output>125.6</output>

<gadget id="calculator">0.4 / 2</gadget>
<output>0.2</output>

<gadget id="calculator">0.2 ** 2</gadget>
<output>0.04</output>

<gadget id="calculator">3.14 * 0.04 * 10</gadget>
<output>1.256</output>

<gadget id="calculator">125.6 / 1.256</gadget>
<output>100</output>

<result>100</result>