Working out cumalative value

[ashab02]

Hello
I would like to work out the cumalative value ffor each row on a sheet I have.
Basically it just needs to start from column 4 each time and then go across and take first value and then add that to the second one, take that answer and add to third one and so on. Basiaclly I need to get an end result on clolumn 25 each time. The code has to be able to count down the rows too.

Can someone show me the code that I will need?

Any help appreciated

[MrShorty]

How about the formula "=sum(rc4:rc24)" copied down column 25?