There is a cube container with a side length of 4dm filled with water and a water depth of 3dm. If a cube iron block with a side length of 1dm is immersed in the water, how many decimeters will the water level rise?
有一个正方体容器，棱长为4dm，里面注有水，水深3dm，如果把一块棱长为1dm的正方体铁块浸入水中，则水面上升多少分米？
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">1 / 16</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">1 * 1 * (1/16)</gadget>
<output>1/16 = around 0.0625</output>

<result>1/16 = around 0.0625</result>