A cuboid container is 8 decimeters long, 0.5 meters wide, and 10 decimeters high. Now the water depth is 5 decimeters. When a small cube iron block with a side length of 2 decimeters is submerged in water, how many decimeters should the water depth be?
一个长方体容器，长8分米，宽0.5米，高10分米，现在水深5分米，当把一个棱长为2分米的小正方体铁块浸没在水中后，水深应该是多少分米？
<gadget id="calculator">8 * 0.5 * 10</gadget>
<output>40</output>

<gadget id="calculator">2 / 40</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">2 * 2 * (1/20)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">0.5 * 10</gadget>
<output>5</output>

<gadget id="calculator">(1/5) + 5</gadget>
<output>26/5 = around 5.2</output>

<result>26/5 = around 5.2</result>