What are you implying?. He would have had to hire a good developer at least for a full month salary to build something like this.
And if you are thinking enterprise, it would take 2-3 developers, 2 analysts, 2 testers, 1 lead and 1 manager 2-3 months to push something like this. (Otherwise why would lead banks spent billions and billions for IT development every year? What tangible difference you see in their website/services?)
5000 calculators may look excessive, but in this case it magnifies the AI capabilities in the future - both in terms of quality and quantity.
And if you are thinking enterprise, it would take 2-3 developers, 2 analysts, 2 testers, 1 lead and 1 manager 2-3 months to push something like this. (Otherwise why would lead banks spent billions and billions for IT development every year? What tangible difference you see in their website/services?)
5000 calculators may look excessive, but in this case it magnifies the AI capabilities in the future - both in terms of quality and quantity.