Type a manuscript, A typed this manuscript in 6 days (2/3), how many days will it take for him to finish typing this manuscript.
打一份稿件，甲6天打了这份稿件的(2/3)，他打完这份稿件要多少天．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) / 6</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 / (1/9)</gadget>
<output>9</output>

<result>9</result>