999 + 9999999999 + 9999999999 + 8888888 = 20,008,889,885
((VIII))(DCCCLXXXVIII)DCCCLXXXVIII
10000000
42
89
222,222,222,222 + 8,888,888 = 222,231,111,110
777777777777777777 + 8888888 = 777777777786666665
999 + 9999999999 + 9999999999 + 8888888 = 20,008,889,885
8 888 888 * 9 999 = 88 879 991 112
((VIII))(DCCCLXXXVIII)DCCCLXXXVIII
790,123,369,876,544
8888888
10000000
It would be from 1111111 to 9999999, and because 9999999 - 1111111 = 8888888, the answer is 8888888.
2048
42
4+1=5. Plus 4 equals 9. Plus 77685769844446473 equals 77685769844446482. Plus 3 equals 77685769844446485. Plus 8 equals 77685769844446493. Plus 1 equals 77685769844446494. Plus 9870998342523322424 equals 1064785604097768918. Plus 4 equals 1064785604097768922.