The perimeter of a rectangle is 120 decimeters and the length is 36 decimeters. Find the area of the rectangle?
一个长方形的周长是120分米，长是36分米，求长方形的面积？
<gadget id="calculator">120 / 2</gadget>
<output>60</output>

<gadget id="calculator">60 - 36</gadget>
<output>24</output>

<gadget id="calculator">36 * 24</gadget>
<output>864</output>

<result>864</result>