I think this question is about the decimal separator which can be either "." or "," depending on what country you happen to be in.
In the US and England (I think) we would say "215.7". In many European countries, it would be written "215,7".
Just think of 215.7 as the same as 215,7.
I do work remotely on a computer in Western Europe while sitting in the US. This took me a little while to get used to when fractional seconds in the log files for experiments I was running came back in the form of 40,2 seconds.