There is 40m*3 water in a cuboid fish pond with a length of 5m and a width of 4m. What is the depth of the fish pond in m?
在一个长5m，宽4m的长方体的鱼池里有40m**3的水，这个鱼池的水深有多少m．
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">40 / 20</gadget>
<output>2</output>

<result>2</result>