Make a cuboid iron drum without a cover, with a shared iron sheet of 192 square decimeters. It is known that the bottom of the barrel is a square with a side length of 4 decimeters. What is the height of the barrel?
做一个无盖的长方体铁桶，共用铁皮192平方分米．已知桶底是边长4分米的正方形，桶高是几分米？
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">192 - 16</gadget>
<output>176</output>

<gadget id="calculator">176 / 4 / 4</gadget>
<output>11</output>

<result>11</result>