[1]: https://duckduckgo.com/?q=100+JPY+in+EUR
[2]: https://duckduckgo.com/?q=2%5E32-1
But like you I drop back for unit-aware calculations. For those an alternative to Google is Wolfram Alpha “!wa speed of light / 400nm in terahertz” [3] which also allows for symbolic computation “!wa integral of 2x” [4].
[3]: https://duckduckgo.com/?q=!wa+speed+of+light+%2F+400nm+in+te...