Uncle Li entered a thesis into the computer, and it took 3 hours to enter it (1/3). At this speed, Uncle Li worked for 7 hours, and how much was left to finish: Answer: How much.
李叔叔把一篇论文录入电脑，3个小时才录入了(1/3)，照这样的速度，李叔叔工作7个小时，还剩几分之几没完成：答：多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/9) * 7</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">1 - (7/9)</gadget>
<output>2/9 = around 0.222222</output>

<result>2/9 = around 0.222222</result>