The volume of a cube with a side length of 1m is 1m**3, then what is the volume of a cube with a side length of 3m in m**3.
棱长是1m的正方体的体积是1m**3，那么棱长是3m的正方体的体积是多少m**3．
<gadget id="calculator">3 * 3 * 3</gadget>
<output>27</output>

<result>27</result>