First enclose an iron wire into a rectangle with a length of 12 meters and a width of 4 meters, and then use this iron wire to form a square. Whose area is larger? How big is it?
先把一个根铁丝围成一个长12米，宽4米的长方形，再用这根铁丝围成一个正方形，围成的图形谁的面积大？大多少呢？
<gadget id="calculator">12 + 4</gadget>
<output>16</output>

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

<gadget id="calculator">16 * (1/2)</gadget>
<output>8</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">64 - 48</gadget>
<output>16</output>

<result>16</result>