A square is scaled, and the side length becomes the original (1/10), so what is the original area.
一个正方形进行放缩，边长变为原来的(1/10)，那么面积是原来的多少．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * (1/10)</gadget>
<output>1/100 = around 0.01</output>

<result>1/100 = around 0.01</result>