Xiao Ming reads "Journey to the West", every day (1/9) of the whole book, how much of the whole book is read in 7 days.
小明看《西游记》，每天看全书的(1/9)，7天看了全书的多少．
<gadget id="calculator">1 / 9</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>