It takes 60 days for Team A to build a road alone, and 40 days for Team B to build it alone. Now that the two teams are working simultaneously from both ends of the road, how many days have they been repairing when the full length (5/6) has been repaired?
修一条路，甲队单独修要60天完成，乙队单独修要40天完成．现在两队从路的两端同时开工，当修了全长的(5/6)时，他们已经修了多少天？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">1 / 40</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">(1/60) + (1/40)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">(5/6) / (1/24)</gadget>
<output>20</output>

<result>20</result>