A section of highway can be completed by team A in 10 days and team B in 12 days. Team A practiced for 4 days first, and the remaining two teams practiced together. How many more days will it take to repair?
一段公路，甲队独修10天完成，乙队独修12天完成．甲队先修4天后，余下的两队合修．还要修多少天？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 4</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/10) + (1/12)</gadget>
<output>11/60 = around 0.183333</output>

<gadget id="calculator">(3/5) / (11/60)</gadget>
<output>36/11 = around 3.272727</output>

<result>36/11 = around 3.272727</result>