Having moved to Sweden and from the '.' to the ',' what is even more confusing is then the thousand separator is switched around. Add to the confusion where a banking interface sometimes itself switches between the two and is not consistent what am I transferring.

But the thing that really got me was in Sweden my 9 year old wasn't even using the comma separator in his maths book it was the dot operator `·`. How confused was I that a 9 year old was working with dot products.