28 + 179 = 207
223 + 224 = 447
1023 + 10234 = 11257
10468 + 23579 = 34047
12468 + 103579 = 116047
111111 + 111111 = 222222
100009 + 1000009 = 1100018
100009 + 1000009 = 1100018
900000 + 1000000 = 1900000
900000 + 1000000 = 1900000
1000000 + 9000000 = 10000000
1000000 + 9000000 = 10000000
1000008 + 2000009 = 3000017
1000008 + 2000009 = 3000017