A rope encloses a rectangle with a length of 8 meters and a width of 4 meters. If the rope is used to form the largest square, what is the area of the square?
一根绳子恰好围成一个长8米、宽4米的长方形，如果用这根绳子围成一个最大的正方形，这个正方形的面积是多少？
<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">12 * (1/2)</gadget>
<output>6</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<result>36</result>