A cylindrical wooden block with a base radius of 5 cm and a height of 20 cm is cut into the largest cuboid. What is the volume of this cuboid in cubic centimeters?
将一个底面半径为5厘米，高20厘米的圆柱形木块，削成一个最大的长方体，这个长方体的体积是多少立方厘米．
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">5 * (5/2) * 4 * 20</gadget>
<output>1_000</output>

<result>1_000</result>