A project can be completed by team A alone in 6 days, and team B can complete it in 8 days alone, how much will the two teams complete in three days?
一项工程，甲队单独做6天完成，乙队独做8天完成，两队三天完成这项工程的多少．
<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">3 * (7/24)</gadget>
<output>7/8 = around 0.875</output>

<result>7/8 = around 0.875</result>