It takes 12 days for team A to repair a road alone, and 18 days for team B to repair it alone. If team A repairs 6 days first, and the remaining two teams jointly repair the rest, how many days will it take to complete the road? ．
一条公路甲队单独修要12天完成，乙队单独修要18天完成，如果甲队先修6天，剩下的甲乙两队合修，剩下的还需要多少天就能修完整条路．
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) * 6</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 18</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">(1/12) + (1/18)</gadget>
<output>5/36 = around 0.138889</output>

<gadget id="calculator">(1/2) / (5/36)</gadget>
<output>18/5 = around 3.6</output>

<result>18/5 = around 3.6</result>