A task is completed in 12 days by A alone, and 10 days by B alone. During the cooperation between A and B, A goes out for 2 days. How many days will the task actually be completed?
一项任务，甲独做12天完成，乙独做10天完成，甲乙合作过程中，甲外出2天，这样任务实际几天完成？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 2</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(1/12) + (1/10)</gadget>
<output>11/60 = around 0.183333</output>

<gadget id="calculator">(4/5) / (11/60)</gadget>
<output>48/11 = around 4.363636</output>

<gadget id="calculator">(48/11) + 2</gadget>
<output>70/11 = around 6.363636</output>

<result>70/11 = around 6.363636</result>