Xiaoxing reads a book. He reads 1/6 of the whole book on the first day, and 20% of the whole book on the second day. He reads a total of 33 pages in two days. How many pages does this book have?
小星看一本书，第一天看了全书的(1/6)，第二天看了全书的20%，两天共看33页，这本书有多少页？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

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

<gadget id="calculator">(1/6) + (1/5)</gadget>
<output>11/30 = around 0.366667</output>

<gadget id="calculator">33 / (11/30)</gadget>
<output>90</output>

<result>90</result>