It would be helpful if you described what you want the formulas to do, and show sample desired results. I am going to make some guesses here on context. But I don't know what you are trying to do with your calculations, so I'll assume that part's OK and you just have a logic problem.
This formula in B7 is returning FALSE
That is because E7 is blank. In that case, E7=0 will evaluate as TRUE, so your IF function will return the FALSE case. But your formula doesn't have a FALSE case, so it just returns FALSE. I think you want this:
Exactly the same problem with the formula in B10:
update to
Same problem with all the formulas, but I think you can see how to fix them from these examples.
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