If they are the Mario Brothers, then are their names Luigi Mario and Mario Mario?
MARIO + BRO = LUIGI
Definitely doable by hand. Solutions are below the image.
SPOILER SOLUTIONS!
MARIO_first | BRO_second | LUIGI_third |
---|---|---|
19847 | 587 | 20434 |
19863 | 783 | 20646 |
39526 | 756 | 40282 |
49826 | 386 | 50212 |