3 456 + 3 456=6912
34 567 + 34 567=69134
345 678 + 345 678 =691356
321 - 123 =198
4 321 - 1 234 =3087
54 321 - 12 345 =41976
654 321 - 123 456=530865
3 456 + 3 456=6912
34 567 + 34 567=69134
345 678 + 345 678 =691356
321 - 123 =198
4 321 - 1 234 =3087
54 321 - 12 345 =41976
654 321 - 123 456=530865