If a square billet with a side length of 8 decimeters is forged into a rectangular parallelepiped steel with a width and a height of 5 decimeters, how long is the forged steel?
把一块棱长8分米的正方体钢坯，锻造成宽和高都是5分米的长方体钢材，锻造的钢材长多少分米？
<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">8 / 25</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">8 * 8 * (8/25)</gadget>
<output>512/25 = around 20.48</output>

<result>512/25 = around 20.48</result>