For a highway, it takes 30 days for team A to complete the repair alone, and 30 days for team B to complete the repair alone. After a few days of joint repair by team A and B, team B stops work and rests. Team A continues to complete the repair for 6 days. How many days does it take for team B to repair it?
一条公路，甲队独修需要30天完成，乙队独修需要30天完成，甲乙两队合修若干天后，乙队停工休息，甲队继续修了6天完成，乙队修了多少天？
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/30) * 6</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(1/30) * 2</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(4/5) / (1/15)</gadget>
<output>12</output>

<result>12</result>