A story book has 120 pages. Xiao Ming reads (1/6) of the whole book on the first day and (1/4) of the whole book on the second day. On the third day, he should start from the page number.
一本故事书有120页，小明第一天读了全书的(1/6)，第二天读了全书的(1/4)，第三天应从第多少页读起．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

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

<gadget id="calculator">(1/6) + (1/4)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">120 * (5/12)</gadget>
<output>50</output>

<gadget id="calculator">50 + 1</gadget>
<output>51</output>

<result>51</result>