Wikipedia seems to consider the IBM 701 as mainframe and from the customers and special numeric format it had I assume it was used to replace entire floors of h

Wikipedia seems to consider the IBM 701 as mainframe and from the customers and special numeric format it had I assume it was used to replace entire floors of human calculators that did nothing but compute the same calculation over and over again. It was also rented for a monthly fee, so the cost comparison was probably straight forward. I wouldn't be surprised if an advanced chat bot with science fiction level AI would replace entire floors of Microsoft call centers at some point in the far future.