Reading a book, I read 11% of the whole book on the first day, and 14% of the whole book on the second day. I read 3 pages less on the first day than on the second day. How many pages does this book have?
看一本书，第一天看了全书的11%，第二天看了全书的14%，第一天比第二天少看了3页，这本书有多少页？
<gadget id="calculator">14 / 100</gadget>
<output>7/50 = around 0.14</output>

<gadget id="calculator">11 / 100</gadget>
<output>11/100 = around 0.11</output>

<gadget id="calculator">(7/50) - (11/100)</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">3 / (3/100)</gadget>
<output>100</output>

<result>100</result>