Hello,
i want to do bookkeeping / accounting for my bitcoin transactions.
I would like to know what people are doing for calculating how much they spend in their fiat currency for bitcoin, etc.

Right now i am buying bitcoin from bitcoinlocal, and after every transaction, finding out how much $1 in my currency equals to how much bitcoin i just got.
Then when i purchase goods online, i can use that as a reference to figure out how much fiat currency i spent.
But im sure there is a better way? Any programs / wallets / spreadsheets available that do this calculating automatically for you??