It takes 6 days for team A to do a project alone, and 8 days for team B to do it alone. If the two teams cooperate, how many days can they complete the project?
一项工程，甲队单独做需要6天，乙队单独做需要8天，如果两队合作，几天可以完成这项工程？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

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

<gadget id="calculator">(1/6) + (1/8)</gadget>
<output>7/24 = around 0.291667</output>

<gadget id="calculator">1 / (7/24)</gadget>
<output>24/7 = around 3.428571</output>

<result>24/7 = around 3.428571</result>