After a little googling, I find I have no need to find out how much I have contributed to my IRAs and SEPs, I just do the calculations with the total amount. One reference said to calculate the amount do for each account, but you can pay it from any of your Tax advantaged accounts.
I don't see why you can't add all accounts use that number rather than calculate each account separately.
Also I have non tax advantaged money over 35 years, Where do I start to find my cost basis?
Thanks for your input, Mikek