5+95+995+....+99999.............95=
|____________|
de 2000 de ori
=(10-5)+(100-5)+(1000-5)+...+(10000000.......0-5)=
|___________|
de 2001ori
=11111...........111110-2.001*5=
|______________|
de 2001 de ori
=11111...........111110-10.005=
=11111...........101105=
|__________|
de 2001-5
=1996de ori
11111...........111110-
10005
---------------------------
11111...........101105