Formula for line by line running totals
what is the formula for a monthly expenses chart that adds the dollar amount of the previous line with the dollar amount of the next line. For example:
$3.00. $3.00
$4.00. $7.00
$15.00. $22.00
I've been browsing pages for 30 minutes and can't find an automated function to do this. I can add sums line by line but I am pretty sure this function exists already. I just don't know the name.