A book has 120 pages. I read (1/5) of the whole book on the first day and (1/3) of the whole book on the second day. From which page should I start on the third day?
一本书有120页，第一天看了全书的(1/5)，第二天看了全书的(1/3)．第三天应从第几页看起？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">(1/5) + (1/3)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">120 * (8/15)</gadget>
<output>64</output>

<gadget id="calculator">64 + 1</gadget>
<output>65</output>

<result>65</result>