There is a cubic filing cabinet in the school archives, with a side length of 4 meters. How big is the space occupied by the cabinet?
学校档案室有一个正方体档案柜，棱长是4米，柜子所占空间的大小有多大？
<gadget id="calculator">4 * 4 * 4</gadget>
<output>64</output>

<result>64</result>