A rectangular iron plate has a perimeter of 68 decimeters and a width of 12 decimeters. What is its area?
一块长方形铁板的周长是68分米，宽是12分米．它的面积是多少？
<gadget id="calculator">68 / 2</gadget>
<output>34</output>

<gadget id="calculator">34 - 12</gadget>
<output>22</output>

<gadget id="calculator">22 * 12</gadget>
<output>264</output>

<result>264</result>