The total length of a road is 1000 meters, (5/8) has been repaired, and the remaining ((())/(())) has not been repaired.
一段公路全长是1000米，修好了(5/8)，还剩下((())/(()))没有修．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 - (5/8)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>