Xiao Ming reads a 120-page technical book, if he reads 8 more pages, then the number of pages read is equivalent to (2/5) of this book. What fraction of the pages in the book did the pages that Xiao Ming originally read account for?
小明看一本120页的科技书，如果再看8页，那么看过的页数就相当于这本书的(2/5)．小明原来看过的页数占全书页数的几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">120 * (2/5)</gadget>
<output>48</output>

<gadget id="calculator">48 - 8</gadget>
<output>40</output>

<gadget id="calculator">40 / 120</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>