A project is completed in 12 days by A alone, and 18 days by B alone. Now the two are working together, and B asks for leave for 2 days in the middle of the work. How many days will it take to complete this project?
一工程，甲独做12天完成，乙独做18天完成，现由二人合作，工作中途乙请假2天，完成这项工程共用多少天？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) * 2</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / 18</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">(1/12) + (1/18)</gadget>
<output>5/36 = around 0.138889</output>

<gadget id="calculator">(5/6) / (5/36)</gadget>
<output>6</output>

<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<result>8</result>