The enclosed file shows data which is added to on a daily basis, so could be any length. What I want is a formula which looks at column L. If a cell is blank then it needs to look at the value in column G (ie L15 = 161. It then adds up all the blank cell totals and puts the result in L52 (still to be resolved). If a cell in column L that was blank is subsequently filled in or vice versa then the total in L52 wants to automatically update. I would also like the same formula to apply for the blanks in column O, taking the value in column H. Any help is appreciated. Kevin.
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