A story book with 180 pages, Liangliang read (1/3) of the whole book on the first day, (4/9) of the whole book on the second day, and left the whole book ((())/(())) If you haven't read it, how many pages should you start reading on the third day?
一本故事书180页，亮亮第一天看了全书的(1/3)，第二天看了全书的(4/9)，还剩全书的((())/(()))没有看，第三天应从第多少页开始看．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(1/3) + (4/9)</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">180 * (7/9)</gadget>
<output>140</output>

<gadget id="calculator">140 + 1</gadget>
<output>141</output>

<result>141</result>