A project can be done by A alone in 6 days, and by B alone in 8 days. Now, after A and B cooperate for 3 days, how much is left?
一项工程，甲单独做需6天，乙单独做需8天，现在甲乙合作3天后，还剩下多少
<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">(7/24) * 3</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 - (7/8)</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>