999…99(2014个9)×999…99(2014个9)=999…99(2014个9)×(1000...00(2014个0)-1)=999…99(2014个9)000...00(2014个0)-999…99(2014个9)=999…99(2013个9)000...00(2013个0)1
999…99(2014个9)=10^2015-1所以结果为10^4030-2*10^2015+1
(10^2015-1)^2=10^4030-2*10^2015+1