Compute the sum of the numbers found at the beginning of each selected line, ignoring currency symbols.
Select the lines you want to sum.
Select "Sum Numbers" in the program bar (which can typically be opened with command-shift-P on macOS and ctrl-shift-P on linux and windows).
Note that Sum Numbers processes full lines, starting with the first line containing the selection and ending with the last line containing the selection.
https://github.com/r-owen/vscode_sum_numbers
To build from source and install, execute the following in the root directory of this package:
npx @vscode/vsce package code --install-extension sumnumbers # use tab completion