Spreadsheet Formula Debugger — illustrative example

INPUT
Formula =SUM(B2:B5 is missing its closing parenthesis.

RESULT
Proposed syntax correction: =SUM(B2:B5). Then verify that B2:B5 is the intended range.

REVIEW
Formula debugging needs the actual formula, sample cells and expected outcome. Separate syntax problems from incorrect assumptions about the data.

This is a teaching example, not a live execution record.