There is a cube of wood whose edge length is 5 decimeters. Process this piece of wood into a largest cylinder. What is the volume of this cylinder in cubic decimeters?
有块正方体木料，它的棱长是5分米．把这块木料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">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(5/2) ** 2</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">3.14 * (25/4) * 5</gadget>
<output>98.125</output>

<result>98.125</result>