Could please provide me a solution, how to use Arithmetic operations in Projections,

current code:
---------------------

.add( Projections.sum("broker.total"), "total" )

Expecting
--------------------

.add( Projections.sum("broker.total") * 100/2, "total" )

the other way is, we can use :

.add( Projections.sqlProjection( "((sum({alias}.percentage)*100)/" + bgTotalPercentage + ") as percentage ", new String[] { "percentage"},new Type[] { Hibernate.BIG_DECIMAL} ))

I dont want to give databse column name in the java code, is the possibe to use object name inside sqlProjections.