Team A and Team B jointly repair a section of road, and Team A works alone for 4 days. (1/3) of this section of the road was completed, and then team B joined in, and the two teams worked together to complete the task in 3 days. How many days would it take for the rest to be completed by team B alone?
甲乙两队合修一段公路，甲队先单独施工4天．完成这段公路的(1/3)，后来乙队加入，两队合修3天完成任务，问剩下的由乙队单独修要用多少天才能修完？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/3) / 4</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) * 3</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) + (1/3)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">1 - (7/12)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">(5/12) / 3</gadget>
<output>5/36 = around 0.138889</output>

<gadget id="calculator">(2/3) / (5/36)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>