The side length of a piece of square paper is 8 cm. Now cut out the largest circle from this square paper. What is the area of the remaining part?
一张正方形纸的边长是8厘米，现从这张正方形纸上剪去一个最大的圆，剩下部分的面积是多少？
<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">64 - 50.24</gadget>
<output>13.76</output>

<result>13.76</result>