In order to welcome the Provincial Tourism Development Conference, the Tongren Municipal Government decided to redecorate the houses along the banks of the river in Bijiang District. If this project is done by Team A alone, it will take 12 days to complete, and Team B will complete it in 8 days if it is done alone. Now team B will do it alone for 3 days, and the rest will be completed by the cooperation of teams A and B. How many days will it take for teams A and B to work together to complete the entire project?
为迎接省旅发大会，铜仁市政府决定对碧江区沿河两岸的房子进行重新装饰．这项工程如果由甲队单独做要12天完成，乙队单独做要8天完成．现乙队先单独做3天后，剩下的由甲、乙两队合作完成．甲、乙两队还要合做几天才能完成全工程？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) * 3</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

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

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

<gadget id="calculator">(5/8) / (5/24)</gadget>
<output>3</output>

<result>3</result>