The area of a rectangular iron plate is 64 square decimeters, the width is 4 decimeters, how many decimeters is its length?
一块长方形铁板的面积是64平方分米，宽是4分米，求它长是多少分米？
<gadget id="calculator">64 / 4</gadget>
<output>16</output>

<result>16</result>