A square billet with a side length of 0.8 meters is forged into a rectangular parallelepiped steel with a width and a height of 0.4 meters. How many meters is the forged steel?
把一块棱长是0.8米的正方体钢坯，锻成宽和高都是0.4米的长方体钢材．锻成的钢材长多少米？
<gadget id="calculator">0.4 * 0.4</gadget>
<output>0.16</output>

<gadget id="calculator">0.8 / 0.16</gadget>
<output>5</output>

<gadget id="calculator">0.8 * 0.8 * 5</gadget>
<output>3.2</output>

<result>3.2</result>