For a project, Team A will do it alone for 2 days, and the rest will be done by Team A and Team B. It can be completed in 3 days. If the project is completed alone, the time required by Team A is the time required by Team B (5 /6), how many days does Team B need to complete the project alone?
一项工程，先由甲队独做2天，剩下的由甲、乙两队合做，3天可以完成，如果单独完成这项工程，甲队需时间是乙队所需时间的(5/6)，乙队单独完成这项工程需要多少天．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">3 + 6</gadget>
<output>9</output>

<result>9</result>