A rectangular parallelepiped container has a length of 10dm, a width of 0.5dm, and a height of 12dm. Now the water depth is 6dm. When a small cube iron block with a side length of 2dm is completely submerged in water (the water does not overflow), how many decimeters should the water depth be? ?
一个长方体容器，长为10dm，宽为0.5dm，高为12dm，现在水深6dm，当把一个棱长为2dm的小正方体铁块完全浸没在水中后(水未溢出)，水深应该是多少分米？
<gadget id="calculator">10 * 0.5</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">2 * 2 * (2/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">(8/5) + 6</gadget>
<output>38/5 = around 7.6</output>

<result>38/5 = around 7.6</result>