Xiaoqiang reads a story book. On the first day, he reads 1/4 of the pages of the book. On the second day, he reads 26 pages, leaving 49 pages unread. How many pages does this book have?
小强看一本故事书，第一天看了全书页数的(1/4)，第二天看了26页，还剩49页没有看．这本书共有多少页？
<gadget id="calculator">26 + 49</gadget>
<output>75</output>

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

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">75 / (3/4)</gadget>
<output>100</output>

<result>100</result>