There is 2100 cubic meters of water in a cuboid reservoir. This reservoir is 50 meters long and 20 meters wide. How deep is the water in meters?
长方体蓄水池中有水2100立方米，这个蓄水池长50米，宽20米，水深多少米？
<gadget id="calculator">50 * 20</gadget>
<output>1_000</output>

<gadget id="calculator">2_100 / 1_000</gadget>
<output>21/10 = around 2.1</output>

<result>21/10 = around 2.1</result>