How to multiply two columns & sum it?

How to find the sum of salary departmentwise after the increment from the following table?

EmpId ** DeptId ** Salary ** %OfIncrement

001 ***** 100 ***** 20000 ***** 30
002 ***** 100 ***** 15000 ***** 25
003 ***** 200 ***** 10000 ***** 15
004 ***** 200 ***** 17500 ***** 10


I want the SQL statement which gives the following

DeptId ***** SumOfSalary

SumOfSalary is the sum of (Salary * %OfIncrement / 100) departmentwise


muralirajan

select sum (salary *...)/100 group by deptid

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