To build a road, Team A will take 12 days to repair it alone, and Team B will spend 8 days to repair it alone. After the two teams cooperate for 4 days, Team A will continue to repair the rest. How many days will it take?
修一条路，甲队独修要12天，乙队独修要8天，两队合作4天后，剩下的由甲队继续修完，还要修多少天？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/12) + (1/8)</gadget>
<output>5/24 = around 0.208333</output>

<gadget id="calculator">(5/24) * 4</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) / (1/12)</gadget>
<output>2</output>

<result>2</result>