Multiple two column values and display result in third column in SQL Server

Please refer below Sql Script

SQL

DECLARE @product AS TABLE(Id INT,Product VARCHAR(20),Price VARCHAR(20),Kg INT)

INSERT INTO @product VALUES(1,'Apple','3,5',2)
INSERT INTO @product VALUES(2,'Orange','2,5',3)
INSERT INTO @product VALUES(3,'Cherry','3,4',4)

SELECT * FROM @product

SELECT Id,Product,Price,Kg,REPLACE((CAST(REPLACE(Price,',','.') AS DECIMAL(18,2)) * Kg),'.',',') Summa FROM @product

OutPut