A large bank like that has dozens of lines of business, and each line of business has several processes that are automated. Then there's reporting, auditing, bi

A large bank like that has dozens of lines of business, and each line of business has several processes that are automated. Then there's reporting, auditing, billing, statement generation, archival, etc. As a bank, you also do all this stuff internally to pay your employees, contractors, create audit trails, document things, keep track of office equipment and supplies, etc. All the things that other companies might use commercial software for, or just use Google sheets or email or another generic solution, this company has a long-established COBOL program for. Are all 112,500 programs used? Probably not. But are 10% of them used at least once a year? Probably.