I work for a company that requires everything to have a privacy policy that meets some minimums. We're technically not supposed to even use Google websearch because putting any question into it potentially sends company information into the world and out of our control. That one's not really enforced, thank goodness.
Without a privacy policy, I guess the calculator app could scrape the numbers you're entering, plus, idk an email and a OneNote entry for context, to reverse engineer the latest doodad we've been designing.
It's difficult to imagine what numbers from the calculator alone could be used for, but combine it with other information and you've got a problem.
Defensish. Close enough that we overlap some and have a lot of intense rules to follow.
These people throwing company private information into chatGPT are absolutely wild to me. I'm waiting for someone from an actual defense company to get busted and make headlines for putting like missile defense system specs in, and then it's part of the dataset used to feed answers to everyone else.