Take a square iron billet with a side length of 20cm, and forge a rectangular steel with a length of 25cm and a width of 16cm. How high is the forged steel?
把一块棱长是20cm的正方体铁坯，锻成长25cm，宽16cm的长方形钢材，锻成的钢材有多高？
<gadget id="calculator">25 * 16</gadget>
<output>400</output>

<gadget id="calculator">20 / 400</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">20 * 20 * (1/20)</gadget>
<output>20</output>

<result>20</result>