(1+1/2004+1/2006+1/2008)*(1/2004+1/2006+1/2008+1/2010)-(1+1/2004+1/2006+1/2008+1/2010)*(1/)(1+1/2004+1/2006+1/2008)*(1/2004+1/2006+1/2008+1/2010)-(1+1/2004+1/2006+1/2008+1/2010)*(1/2004+1/2006+1/2008)求简算
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