A project takes 12 days for team A to complete, team B takes 18 days to complete, and the two teams each work in 5 days. What percentage of the project is left?
一项工程，甲队要做12天完成，乙队要做18天完成，两队各做了5天，还剩下这项工程几分之几？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</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">(5/36) * 5</gadget>
<output>25/36 = around 0.694444</output>

<gadget id="calculator">1 - (25/36)</gadget>
<output>11/36 = around 0.305556</output>

<result>11/36 = around 0.305556</result>