A road has been repaired (5/6), that is, how much
一条路已经修了(5/6)，也就是多少
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(5/6) / (1/6) / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(1/6) / (5/6)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>