After a cube water tank with an inner side length of 4dm is filled with water, it is poured into a cube water tank with an inner bottom area of 25dm**2. How high is the water surface?
1个内边长为4dm的正方体水箱装满水后，全部倒入1个内底面积为25dm**2的正方体水箱中，水面有多高？
<gadget id="calculator">4 / 25</gadget>
<output>4/25 = around 0.16</output>

<gadget id="calculator">4 * 4 * (4/25)</gadget>
<output>64/25 = around 2.56</output>

<result>64/25 = around 2.56</result>