Wang Jiayi read a book (1/4) on the first day, and read 20% of the total book on the second day, leaving 22 pages. How many pages does this book have?
王佳一第一天看了一本书的(1/4)，第二看了总书的20%，还剩22页，这本书共有多少页？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/4) - (1/5)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">22 / (11/20)</gadget>
<output>40</output>

<result>40</result>