Describes the cause and action for error messages.
Error Message(English)：
formula not going away
Excel display formula rather than result
http://users.wfu.edu/matthews/misc/Excel/FormulaDisplayBug.html
How to avoid broken formulas - Office Support
https://support.office.com/en-us/article/how-to-avoid-broken-formulas-8309381d-33e8-42f6-b889-84ef6d・・・
Why Is Your Excel Formula Not Calculating? | Pryor Learning Solutions
https://www.pryor.com/blog/why-is-your-excel-formula-not-calculating/
Use This Alternate Formula When Excel's TRIM Function ... - Lifewire
https://www.lifewire.com/when-excels-trim-function-doesnt-work-3123658
Excel Errors: Auditing Your Excel 2019 Formulas - dummies
https://www.dummies.com/software/microsoft-office/excel-errors-auditing-your-excel-2019-formulas/
Excel Formulas Not Calculating ? Contextures Blog
https://contexturesblog.com/archives/2012/02/16/excel-formulas-not-calculating/
8 Excel Error Messages You're Sick of Seeing (And How to Fix Them)
https://blog.hubspot.com/marketing/common-excel-error-messages
Remove Cell Fill Color That Will Not Go Away - Solve Your Tech
https://www.solveyourtech.com/remove-cell-fill-color-that-wont-go-away/
The top eight Excel formula errors and how to fix them - TechGenix
http://techgenix.com/excel-formula-errors/