If the area of a rectangle increases by 12.5%, if its length decreases by (1/10), then its width should increase by ((())/(())).
一个长方形的面积增加了12.5%，如果它的长减少了(1/10)，那么它的宽应增加((())/(()))．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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