Spotlight’s math support is very rudimentary. I think I even found a bug in it recently trying to use “1e9” scientific notation.
I’ve found Google has the best calculator feature, which supports complex unit-aware inputs like “6 gigabytes / (7.1 mb/sec)”. Even Wolfram Alpha seems to get confused with some simple inputs.
I reach for my physical calculator that is always with me. Seems weird as it's less convenient that using spotlight in the moment and larger than my iphone 11. Just never got out of the habit.
I’ve found Google has the best calculator feature, which supports complex unit-aware inputs like “6 gigabytes / (7.1 mb/sec)”. Even Wolfram Alpha seems to get confused with some simple inputs.