project can be completed in 12 days by teams A and B. After 8 days of cooperation, team A will complete the rest in 10 days. How many days will it take for this project to be completed by Team B alone?
一项工程，甲、乙两队合做12天可以完成，两队合做8天后，余下的由甲队做10天完成．这项工程若由乙队独做要多少天才能完成？
<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">(1/12) - (1/30)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 / (1/20)</gadget>
<output>20</output>

<result>20</result>