A cube of steel with an edge length of 1 meter is cast into a cuboid steel with a cross-section length of 5 decimeters and width of 4 decimeters. How many decimeters is the length of the cuboid steel.
把一块棱长为1米的正方体钢材，铸造成横截面长5分米、宽4分米的长方体钢材．长方体钢材长多少分米．
<gadget id="calculator">1 * 10 * 1 * 10 * 1 * 10</gadget>
<output>1_000</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<gadget id="calculator">1_000 / 20</gadget>
<output>50</output>

<result>50</result>