Xiaomin reads a story book. He reads (1/4) of the whole book on the first day and (1/3) of the whole book on the second day. He reads 77 pages in total in two days. How many pages does this book have?
小民读一本故事书，第一天读了全书的(1/4)，第二天读了全书的(1/3)，两天共读77页．这本数有多少页？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/4) + (1/3)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">77 / (7/12)</gadget>
<output>132</output>

<result>132</result>