A large cube with an edge length of 4 decimeters is assembled from small cubes of wood with a volume of 1 cubic decimeter. How many such small cubes of wood are needed.
用体积是1立方分米的小正方体木块拼成棱长为4分米的大正方体．需要这样的小正方体木块多少块．
<gadget id="calculator">4 * 4 * 4</gadget>
<output>64</output>

<result>64</result>