A 4-meter-long rope goes around a square table exactly, what is the area of the square table in square meters?
一根长4米的绳子正好绕方桌一周，这个方桌的面积是多少平方米．
<gadget id="calculator">4 / 4</gadget>
<output>1</output>

<gadget id="calculator">1 * 1</gadget>
<output>1</output>

<result>1</result>