public double GetNumber(
	int row,
	int column
)

Public Function GetNumber ( 
	row As Integer,
	column As Integer
) As Double

public:
virtual double GetNumber(
	int row, 
	int column
) sealed

abstract GetNumber : 
        row : int * 
        column : int -> float 
override GetNumber : 
        row : int * 
        column : int -> float