Li Li reads a comic book. She reads (1/3) of the whole book on the first day and (1/4) of the whole book on the second day. She reads a total of 84 pages in two days. How many pages are there in total?
李丽看一本漫画书，第一天看了全书的(1/3)，第二天看了全书的(1/4)，两天共看了84页，全书共多少页？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

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

<gadget id="calculator">84 / (7/12)</gadget>
<output>144</output>

<result>144</result>