2008+2007+2006+2005-2004-2003-2002-2001+...+8+7+6+5-4-3-2-1=how many.
2008+2007+2006+2005-2004-2003-2002-2001+…+8+7+6+5-4-3-2-1=多少．
<gadget id="calculator">4 * 1_004</gadget>
<output>4_016</output>

<result>4_016</result>