Xiaojun reads a 180-page story book. He reads (1/3) of the whole book on the first day and (1/4) of the whole book on the second day. How many pages should he start reading on the third day?
小军看一本180页的故事书，第一天看了全书的(1/3)，第二天看了全书的(1/4)，第三天应该从多少页开始看起．
<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">180 * (7/12)</gadget>
<output>105</output>

<gadget id="calculator">105 + 1</gadget>
<output>106</output>

<result>106</result>