If you do your taxes on Turbo Tax they will walk you through everything and you can probably import much of the info right from ETrade as they helped me do with TDAmeritrade. You will have to go back and look at your purchases and figure out how much you paid for the shares you sold. Don't forget to at the sales charge when buying and selling those shares to your cost basis.
I use TurboTax and have been for over 10 years. I take my Scottrade and Zecco accounts and upload the tax data right into Turbo Tax and it does it all for me. Also have an Etrade account but its a Roth IRA so don't have to do that with TurboTax.
I would not begin to export my stock transactions manually again as I did with a Professional Tax person a few years back and they charged me $400 for the hours it took them to do it maually.
Short term tax gains are figured by the IRS at 40% and long term gains are figured at 15% as long as you hold a stock for 365 days plus 1.
Hope this helps. I am sure there are others in the Den who can assist also.
Hope your able to enjoy gains and future lock downs here.
Market Data 
Markets 
AI
