If value of cell is > 0, multiple with the value in the same row - column b

[ninny_]

Is possible to make macro to count in some row is greater than 0 to multiple with the value in the same row in column B where is the price..
To get what i need my formula looks like this..
=C12*B12+C19*B19+C24*B24..
And than do same thing like that in next .. column and then next... etc...

[RAMESHB]

=sumproduct(($b$4:$b$32)*(c4:c32))

[ninny_]

It works fine... thank you...