Fold a piece of paper in half twice, and after unfolding, each part is ((())/(())) of the whole paper.
把一张纸对折2次，展开后每一份是整张纸的((())/(()))．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>