When typing in something like 1 + 1 in the search bar, it automatically functions as a calculator (showing "=2" in the results). I generally like using this as it's easier to pull up than a specific tab or app. My only annoyances with it are that
1. you currently can't have any spaces; it doesn't recognize 1+1, it HAS to be 1 + 1, which is just annoying to go back and add the spaces.
2. you can't auto copy the result to your clipboard by pressing enter while it's selected.
Both of these are default in chromium and it's the one feature I'm missing since switching over. Small change but would save a lot of annoyance 🙂