I read this book on the first day (7/11), and read this book on the second day (3/11). On the third day, I read less than the total of the previous two days (1/11). How much of this book did you read in three days?
我第一天看了这本书的(7/11)，第二天看了这本书的(3/11)，第三天看的比前两天的总数少(1/11)，第三天看了这本书的几分之几？
<gadget id="calculator">10 / 11</gadget>
<output>10/11 = around 0.909091</output>

<gadget id="calculator">9 / 11</gadget>
<output>9/11 = around 0.818182</output>

<gadget id="calculator">(10/11) * (9/11)</gadget>
<output>90/121 = around 0.743802</output>

<result>90/121 = around 0.743802</result>