A cylinder with a height of 5 decimeters has a lateral area of 62.8 decimeters, find the volume of the cylinder.
一个5分米高的圆柱体，它的侧面积是62.8平方分米，求圆柱体的体积．
<gadget id="calculator">62.8 / 5 / 3.14 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4 * 5</gadget>
<output>62.8</output>

<result>62.8</result>