A piece of steel with a side length of 0.8dm is cast into a cuboid part. The cross section of this part is a square with a side length of 4cm. What is the length of this part?
一块棱长为0.8dm的正方体钢材，铸造成一个长方体零件，这个零件的横截面是边长为4cm的正方形，这个零件的长是多少？
<gadget id="calculator">0.8 * 10</gadget>
<output>8</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">8 / 16</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">8 * 8 * (1/2)</gadget>
<output>32</output>

<result>32</result>