If a square iron block with a side length of 10dm is forged into a rectangular parallelepiped iron bar with a width and a length of 50cm, how long can the iron bar be forged?
把一块棱长为10dm的正方体铁块锻造成宽和长都是50cm的长方体铁条，能锻造成多长的铁条？
<gadget id="calculator">10 * 10 * 10</gadget>
<output>1_000</output>

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

<gadget id="calculator">1_000 / 25</gadget>
<output>40</output>

<result>40</result>