most "real" money are just digital now adays
I think people don't know how hard to moving actual real money in terms of millions to billions
Looking at Citi, it's not hard at all, they regularly fatfinger sums like that left and right [0][1].
[0] https://edition.cnn.com/2025/02/28/investing/citigroup-bank-...
[1] https://www.straitstimes.com/business/banking/citigroup-acci...