Master Li wants to forge a cube steel billet with a side length of 20 cm into a cuboid steel material. The length of the cuboid steel material is 40 cm, the width is 10 cm, and how many centimeters is the height?
李师傅要将一块棱长为20厘米的正方体钢坯锻造成一块长方体钢材，长方体钢材的长是40厘米，宽10厘米，高是多少厘米？
<gadget id="calculator">40 * 10</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>