A square tin can with a side length of 0.8 decimeters is attached with a trademark around it. What is the area of the trademark in square decimeters?
一个正方体的罐头盒棱长是0，8分米在它的四周贴上商标，商标的面积是多少平方分米？
<gadget id="calculator">8 / 10</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * (4/5) * 4</gadget>
<output>64/25 = around 2.56</output>

<result>64/25 = around 2.56</result>