A book, Xiao Ming plans to read it every day (2/7), how much he plans to read this book.
一本书，小明计划每天看(2/7)，这本书计划多少看完．
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 / (2/7)</gadget>
<output>7/2 = around 3.5</output>

<result>7/2 = around 3.5</result>