Dig a pool with a length of 5 meters, a width of 3 meters and a depth of 2.5 meters. What is the area of the pool in m**2.
挖一个长5米，宽3米，深2.5米的水池，这个水池的占地面积是多少m**2．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>