There is a project that Team A alone can complete in 24 days, and Team B alone can complete it in 30 days. Team A and Team B worked on it for 8 days at the same time, and the rest of Team C did it for another 6 days. How many days will it take for Team C to complete this project alone?
有一工程，甲队单独做24天完成，乙队单独做30天完成．甲、乙两队同时做8天后，余下的丙队做，又做了6天才完成，这个工程丙队单独做需要多少天完成？
<gadget id="calculator">1 / 24</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/24) + (1/30)</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">(3/40) * 8</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 6</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">1 / (1/15)</gadget>
<output>15</output>

<result>15</result>