The edge length of a cube water tank is 10dm. Pour such a full tank of water into a cuboid water tank whose length is 25dm, width is 10dm, and height is 6dm.
一个正方体水箱的棱长为10dm，把这样的一满箱水倒入一个长为25dm，宽为10dm，高为6dm的长方体水箱里，这是水面离长方体容器口有多少分米？
<gadget id="calculator">10 * 10 * 10</gadget>
<output>1_000</output>

<gadget id="calculator">25 * 10</gadget>
<output>250</output>

<gadget id="calculator">1_000 / 250</gadget>
<output>4</output>

<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<result>2</result>