A railway can be repaired by team A alone in 5 days to complete (1/20) of the total engineering quantity, and team B alone can complete the total project quantity (1/25) in 6 days. How many days will it take for the two teams to work together?
一条铁路，甲队单独修5天完成总工程量的(1/20)，乙队单独修6天完成总工程量的(1/25)．两队合修，需要多少天完成？
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(1/20) / 5</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">1 / 25</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">(1/25) / 6</gadget>
<output>1/150 = around 0.006667</output>

<gadget id="calculator">(1/100) + (1/150)</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">1 / (1/60)</gadget>
<output>60</output>

<result>60</result>