3/10 is not equal to 0.3 it's equal to 0,3 periodic
0.3 is a decimal, as is 0,3.
The thing you use to mark a decimal depends on your location in the world.
US uses the period to mark decimals (.)
Europe and other places use the comma to mark decimals (,)
both 0.3 and 0,3 equal 3/10
+5265 
