What is the easiest way to solve "," problem

Fields A, B and C are float-values

INSERT INTO Table
(A, B, C)
VALUES (1,2,3)

This is ok, but. How can I insert values A=1,1 B=2,2 C=-11,123

This is not working

INSERT INTO Table
(A, B, C)
VALUES (1,1, 2,2 -11,123)