Lingling saw a piece of news in "Xinyang Daily": The city appearance administrator of the new district decided to widen the circumference of the circular flower bed located in the center of the county with a circumference of 31.4 meters by 1 meter. How many square meters do you think the area of the widened flower bed has increased?
玲玲在《信阳日报》上看到一则消息：新区市容管理员决定将位于县城中心的底面周长是31.4米的圆形花坛的四周向外拓宽1米．你认为拓宽后的花坛面积增加了多少平方米呢？
<gadget id="calculator">31.4 / 3.14 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<gadget id="calculator">113.04 - 78.5</gadget>
<output>34.54</output>

<result>34.54</result>