It takes 12 days for a project to be completed by teams A and B. Now team A works alone in 18 days, and the rest is done by team B. It will be completed in 8 days. If the whole project is done by team A alone, how many days will it take to complete ?
一项工程，甲、乙两队合做要12天完成，现在甲队独做18天，余下的由乙队接着做，8天正好完成，如果全工程由甲队独做，要多少天完成？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) * 8</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) / 10</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">1 / (1/30)</gadget>
<output>30</output>

<result>30</result>