Cut a cuboid with a length of 9 cm, a width of 5 cm, and a height of 4 cm into a cube with the largest volume. What is the volume of the cube?
将一个长是9cm、宽是5cm、高是4cm的长方体截成一个体积最大的正方体，这个正方体的体积是多少？
<gadget id="calculator">4 ** 3</gadget>
<output>64</output>

<result>64</result>