A cuboid swimming pool is 50 meters long, 25 meters wide, and 2.2 meters deep. If 150 cubic meters of water are poured into the swimming pool every hour, after how many hours, the water depth in the pool will reach 1.8 meters.
一个长方体游泳池，长50米，宽25米，深2.2米，如果每小时往游泳池里注水150立方米，多少小时后，池里的水深可达1.8米．
<gadget id="calculator">1.8 / 150</gadget>
<output>0.012</output>

<gadget id="calculator">50 * 25 * 0.012</gadget>
<output>15</output>

<result>15</result>