There are three cuboid pools, large, medium, and small. Their mouths are square, respectively 5 decimeters, 3 decimeters, and 2 decimeters. Now put two stones into the medium and small pools respectively. The water surface of these two pools 6 cm and 4 cm respectively, if these two stones sink into the large pool, how many centimeters will the water level of the large pool rise?
有大、中、小三个长方体水池，它们的口都是正方形分别是5分米、3分米、2分米，现在把两块石头分别放入中、小水池内，这两个水池的水面分别升高6厘米和4厘米，如果这两块石头都沉入大水池中，那么大水池的水面将升高多少厘米？
<gadget id="calculator">3 * 10 * 3 * 10 * 6</gadget>
<output>5_400</output>

<gadget id="calculator">2 * 10 * 2 * 10 * 4</gadget>
<output>1_600</output>

<gadget id="calculator">5_400 + 1_600</gadget>
<output>7_000</output>

<gadget id="calculator">5 * 10 * 5 * 10</gadget>
<output>2_500</output>

<gadget id="calculator">7_000 / 2_500</gadget>
<output>14/5 = around 2.8</output>

<result>14/5 = around 2.8</result>