To build a highway, the full length (5/8) has been built, and the remaining full length has not been repaired.
修一条高速公路，已经修了全长的(5/8)，还剩全长的多少没修．
<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>