Same when doing currency conversions.
If I search "1.5 euro to sek", it will correctly show 17,38 SEK, but if I search "1,5 euro to sek" it will incorrectly show 173,81 SEK.
Notice how the displayed output correctly uses a comma as a separator... 🙂
This is annoying and important on Swedish keyboards where we have a comma key on our numpads and not a period key. This means we can't enter numbers on our numpads without reaching over...