In base 5 the answer is 1000. In base 10, 445.
444+444+444+444=22x 1776=22x x80.73
444
123 + 321 = 444
444 443 572 ---- 1459
444+555=999
4 + 444 = 448
898989 + 444 = 899433
111 + 444 = 555
444+222=666 like wha u not understand
2900005567121
667
111+222+333-444+555+666-777= no will know in 2 millon years.