<prompt> Human: I know that you can withdraw the principle in a Roth IRA, but I have been in Roth IRA for 20 years and transferred the account between different brokerages over time, that I dont even remember how much was gains vs principle. Since gains are tax-free, its not even on my tax records, so what should I do?  <response>: Abandon the idea and find a different way to get the money you need 