For a paper, Uncle Li entered (1/3) in 3 hours. At this speed, after working for 7 hours, he can enter ((())/(())) of this paper.
一篇论文，李叔叔3小时录入了(1/3)，照这样的速度，工作7小时，可以录入这篇论文的((())/(()))．
<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>

<result>7/9 = around 0.777778</result>