Fold a piece of rectangular paper in half consecutively 4 times, one of which is the size of the piece of paper
把一张长方形纸连续对折4次，其中一份是这张纸的多少
<gadget id="calculator">2 * 2 * 2 * 2</gadget>
<output>16</output>

<gadget id="calculator">1 / 16</gadget>
<output>1/16 = around 0.0625</output>

<result>1/16 = around 0.0625</result>