@matigo COBOL’s hard to beat both for fixed-format flat-file handling and for leading people not to screw up by using floating point for currency. It gets a lot of flak from people who don’t know a thing about it. (Pretty sure adding the report writer would have inspired a holy war if programmers had had the Internet though.)
FORTRAN is another in the “long-lived and resource-friendly” language camp. It’s probably even more healthy in terms of teaching new authors than COBOL, thanks to its continued use in the sciences / engineering.