highway was repaired (1/4) on the first day and (1/3) on the second day. There are still 80 meters left, and there are ((())/(())) left to be repaired.
一条公路，第一天修了(1/4)，第二天修了(1/3)，还剩80米，还剩((())/(()))没修．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/4) - (1/3)</gadget>
<output>5/12 = around 0.416667</output>

<result>5/12 = around 0.416667</result>