A piece of work needs 6 days to be completed by A alone, and the work efficiency of B is twice that of A. How many days will it take for two people to do this job (6/5) now? (column calculation)
一件工作，甲单独做完需要6天，乙的工效是甲的2倍．现在由两人合做这件工作的(6/5)，需要多少天．(列式计算)
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) * 2</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/6) + (1/3)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(6/5) / (1/2)</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>