A cube steel billet with a side length of 4 decimeters is forged into a cuboid with an area of 20 decimeters square. What is the height of this cuboid?
把一个棱长4分米的正方体钢坯锻造成一个占地面积是20平方分米的长方体，这个长方体的高是多少分米．
<gadget id="calculator">4 / 20</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">4 * 4 * (1/5)</gadget>
<output>16/5 = around 3.2</output>

<result>16/5 = around 3.2</result>