If the bottom of a cuboid is a square with a side length of 4 decimeters and a height of 8 decimeters, process it into the largest cylinder. What is the volume of this cylinder in cubic decimeters?
把一块长方体底面是一个棱长为4分米的正方形，高是8分米，加工成一个最大的圆柱体，这个圆柱的体积是多少立方分米？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4 * 8</gadget>
<output>100.48</output>

<result>100.48</result>