Is it possible to create a function in VSCode that will be executed on the code when hotkeys are used?

Question

Visual Studio Code

I am translating a site into another language and I also need to convert rubles to euros. no admin. So, it takes a very long time to manually correct each number, because. First you need to copy it, calculate it in a calculator and then paste it back.

Is it possible to write a function in the VSCode settings, if so, where exactly. I want to highlight the price and use hotkeys so that the price corrects itself. Or do you need to write your own plugin for this?