Take a cube billet with a side length of 5 decimeters and forge it into a rectangular parallelepiped steel with a width of 2.5 decimeters and a height of 2 decimeters. How long is the forged steel?
把一块棱长是5分米的正方体钢坯，锻成宽2.5分米，高2分米的长方体钢材，锻成的钢材有多长？
<gadget id="calculator">2.5 * 2</gadget>
<output>5</output>

<gadget id="calculator">5 / 5</gadget>
<output>1</output>

<gadget id="calculator">5 * 5 * 1</gadget>
<output>25</output>

<result>25</result>