Open any chat tool and paste: 'Excel formula =SUM(A1:A5 returns #ERROR — what's wrong and the fixed formula? Assume missing paren.' You're done when the fixed formula includes the missing closing parenthesis.
How-to · USE · USE.5
X-style: Excel formula debug via chat
Debug Excel formulas in chat with the formula + error + sample cells — still verify the fix in the sheet.
Worked example
X loves talking about 'AI for Excel' — but that's only worth trying once you can paste a formula safely (never real payroll data). Let's practice on a made-up error first.