A cuboid cistern is 20m long, 15m wide, and 11m less deep than wide. How many cubic meters of water can this cistern hold?
一个长方体蓄水池长20m，宽15m，深比宽少11m，这个蓄水池能装水多少立方米？
<gadget id="calculator">15 - 11</gadget>
<output>4</output>

<gadget id="calculator">20 * 15 * 4</gadget>
<output>1_200</output>

<result>1_200</result>