Pour 40 liters of water into a cuboid pool with a length of 5 decimeters, a width of 4 decimeters, and a height of 7 decimeters. How deep is the water?
将40升的水倒入一个长5分米，宽4分米，高7分米的长方体水池中，水深多少分米？
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

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

<result>2</result>