1又2002分之1 = 1 + 1/20022又2002分之2 = 2 + 2/2002...2001又2002分之2001 = 2001 + 2001/2002相加的1 + 1/2002 + 2 + 2/2002 + .+ 2001 + 2001/2002= (1 + 2 + ...+ 2001) + (1 + 2 + ...+ 2001)/20021 + 2 + ......最后答案是多少急需要准确数字？2分之4008003或者2004001.5