A square scarf with a side length of 80 cm has an area of () square decimeters.
一块边长是80厘米的方巾，它的面积是()平方分米．
<gadget id="calculator">80 / 10</gadget>
<output>8</output>

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

<result>64</result>