@peterfr I'm lost, let's break it down.
In EU both 8.2 and 8,2 are the same number.

The difference only comes when we're dealing with thousands.
8.200,0 (never seen it written this way)
8 200,0 (possibly deprecated, rarely used)
8,200.0 (acceptable, still confusing)
8 200.0 (common)

Right?