The launcher included in PowerToys (called Run utility[0]) does support arithmetic. Sure, it's an extra thing to install, but it's first-party at least. [0]: h

The launcher included in PowerToys (called Run utility[0]) does support arithmetic. Sure, it's an extra thing to install, but it's first-party at least. [0]: https://docs.microsoft.com/en-us/windows/powertoys/run https://docs.microsoft.com/en-us/windows/powertoys/run