A rectangular swimming pool is 50 meters long, 25 meters wide, and 2 meters deep. Now, how many cubic meters of water should be poured into the pool to make the water surface 0.5 meters below the pool mouth?
一个长方形游泳池，长50米，宽25米，深2米，现在往池里放水，要使水面低于池口0.5米，需要放水多少立方米？
<gadget id="calculator">2 - 0.5</gadget>
<output>1.5</output>

<gadget id="calculator">50 * 25 * 1.5</gadget>
<output>1_875</output>

<result>1_875</result>