The refinery needs to build an oil storage tank that can hold 62,800 liters of oil. If the diameter of the bottom of the tank is 4 meters, how many meters should it be high?
炼油厂要建一个能容油62800升的储油罐，如果罐内的底面直径是4米，那么高应该是多少米？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">62.8 / 12.56</gadget>
<output>5</output>

<result>5</result>