A project is constructed by engineering team A alone, and it takes 8 hours to complete; the work efficiency of team B is 2/3 of that of team A. If team A works for 2 hours first, the rest will be done by team A and team B. , so how many hours will it take to complete?
一项工程由甲工程队单独施工，需要8小时完成；乙的工作效率是甲队的(2/3)，如果先由甲队做2小时后，剩下的再由甲乙两队合作来做，这样到完成还需要多少小时？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) * 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/8) * (2/3)</gadget>
<output>1/12 = around 0.083333</output>

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

<gadget id="calculator">(3/4) / (5/24)</gadget>
<output>18/5 = around 3.6</output>

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