Xiaoli reads a book. She reads 28 pages on the first day and 22 pages on the second day. She reads (1/4) of the whole book in two days. How many pages does this book have?
小丽看一本书，第一天看了28页，第二天看了22页，她两天一共看了全书的(1/4)，这本书有多少页？
<gadget id="calculator">22 + 28</gadget>
<output>50</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">50 / (1/4)</gadget>
<output>200</output>

<result>200</result>