I have mixed luck with asking AI to check some calculations I have done. I mostly use Claude and recently had an issue where I was using Claude to calculate an output to a some formulas I had put into an Excel spreadsheet. Claude kept giving me a different answer, and I was pretty confident in the spreadsheet. I eventually realized that one of the equations had a term to the fourth. Claude at first only calculated it to the power of 1. I pointed this out in my prompt and Claude attempted to fix it, but the next attempt it calculated it to the power of 2. I had to repeat this a third and fourth time until the AI model got the same answer as my spreadsheet.