A cuboid pool is 50 cm long, 40 cm wide, and 30 cm deep. Put 40 liters of water in the pool. How deep is the water in cm?
一个长方体水池，长50厘米，宽40厘米，深30厘米，在水池里放入40升水，水深是多少厘米？
<gadget id="calculator">50 * 40</gadget>
<output>2_000</output>

<gadget id="calculator">1_000 / 2_000</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">40 * (1/2)</gadget>
<output>20</output>

<result>20</result>