Short version: Why don\'t I have to coerce 60, and int, into a double, so that I can use division with another double if I DO care about the fractional part?
Long ve
You are right. The int 60 is promoted to double automatically. Writing 60.0 is correct, but redundant.
60
double
60.0
C# language specification, "7.2.6.2 Binary numeric promotions": http://msdn.microsoft.com/en-us/library/aa691330.aspx