You say
This time, we'll use the last 3 numbers of stock index closing prices, that is one number before (left of) the comma, and the two after (right of) the comma.
Which of these numbers are those?

the comma and period are different in different nations...
The bottom three.
This kinda shot my mind actually, and apparently my use of the comma/period have been switched.
I used to write numbers "1.234,56" instead of "1,234.56", but from now on I will stick to ISO 31-0 by writing "1 234.56".
