Each page of the Mathematical Olympiad is printed with a page number, for example, the first sheet has two pages, and there are two page numbers in total. Originally, the sum of all page numbers was 6903. Later, the editor added content and added 7 more sheets, and finally each page has a page number. What is the sum of all page numbers now?
奥数书的每页都印有一个页码，例如第一张纸有两页，共有两个页码．原本所有页码之和是6903，后来编者增加内容及再加入7张纸，而最后每一页都有一个页码数．问现在所有页码之总和是多少？
<gadget id="calculator">1 + 131</gadget>
<output>132</output>

<gadget id="calculator">131 / 2</gadget>
<output>131/2 = around 65.5</output>

<gadget id="calculator">132 * (131/2)</gadget>
<output>8_646</output>

<result>8_646</result>