A square container with a side length of 5 cm is filled with water at a depth of 4 cm. Now put a square block of wood with a side length of 2 cm. Half of the block is immersed in the water. How many centimeters does the water in the container rise?
一个棱长为5厘米的正方体容器中放了4厘米深的水，现放入一个棱长为2厘米的正方体木块，木块的一半浸入水中，容器中的水升高了多少厘米．
<gadget id="calculator">2 / 25</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">8 * (2/25)</gadget>
<output>16/25 = around 0.64</output>

<result>16/25 = around 0.64</result>