A very reasonable misunderstanding, because that's exactly how 2.175 would be interpret in Finland. As 2175. In Finland, comma is the decimal separator.
Technically, I'm not sure most people in Finland would interpret 2.175 as 2175 because the dot isn't generally used as a thousands separator either. If you want a thousands separator, it's usually just a single space. "2.175" would be just a weird bunch of numbers as the dot isn't generally used as any kind of a number separator.
