How to parse $\sum_{i=0}^n A_i + B$?

Question

If we have an expression of the form $\sum_{i=0}^n A_i + B$, does that mean $\sum_{i=0}^n (A_i + B)$, or $(\sum_{i=0}^n A_i) + B$? Is there some accepted convention?

Answer 1

If you are sure that there is no typo in the source where this comes from, then the sum only belongs to $A_i$ not $B$.

Actually, it's up to you in what form to write, but make sure the later reader won't encounter any difficulty to understand :)