For a project, it takes 18 days for team A to do it alone, and 12 days for team B to do it alone. It is known that after 6 days of cooperation between teams A and B, team A will do the rest alone. How many days will it take for team A to work on it?
一项工程，甲队单独做需要18天，乙队单独做需要12天，已知甲乙两队合作6天后，剩下的由甲队单独做，甲队还要做多少天才能完成？
<gadget id="calculator">1 / 18</gadget>
<output>1/18 = around 0.055556</output>

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

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

<gadget id="calculator">(5/36) * 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) / (1/18)</gadget>
<output>3</output>

<result>3</result>