A cube of iron with a volume of 216 cubic decimeters is melted and cast into an iron plate with a length of 18 decimeters and a width of 4 decimeters. How many decimeters is this iron plate thick?
把一个体积为216立方分米的正方体铁块熔铸成一个长18分米，宽4分米的铁板，这块铁板厚多少分米？
<gadget id="calculator">18 * 4</gadget>
<output>72</output>

<gadget id="calculator">216 / 72</gadget>
<output>3</output>

<result>3</result>