Dig a cuboid vegetable kiln whose length and width are both 6m. How many meters should be dug to make the volume 54m**3?
挖一个长和宽都是6m的长方体菜窑，要使容积是54m**3，应挖多少m深．
<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">54 / 36</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>