There is a job that Li Ming can complete in 12 days alone, and Wang Ping can complete it in 24 days alone. Two people work together, how many days can it be completed?
有一项工作，李明单独做12天可以完成，王平单独做24天可以完成．两人合作，几天可以完成？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / 24</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">(1/12) + (1/24)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / (1/8)</gadget>
<output>8</output>

<result>8</result>