Dig a cellar with a length of 4 meters, a width of 3 meters, and a depth of 2 meters. How many square meters does this cellar occupy?
挖一个长4米，宽3米，深2米的地窖，这个地窖占地多少平方米．
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>