A circular glass tabletop has a diameter of 80 cm. If a circular tablecloth is laid on this circular glass, the edge of the tablecloth must exceed 20 cm. How many square centimeters is the area of the tablecloth larger than the table?
一个圆形的玻璃桌面，直径为80厘米，如果给这块圆形玻璃铺上圆形桌布，桌布边沿要超出20厘米，桌布面积比桌子大多少平方厘米？
<gadget id="calculator">80 + 20</gadget>
<output>100</output>

<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<gadget id="calculator">50 ** 2</gadget>
<output>2_500</output>

<gadget id="calculator">3.14 * 2_500</gadget>
<output>7_850</output>

<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">40 ** 2</gadget>
<output>1_600</output>

<gadget id="calculator">3.14 * 1_600</gadget>
<output>5_024</output>

<gadget id="calculator">7_850 - 5_024</gadget>
<output>2_826</output>

<result>2_826</result>