Excel formula problem with sheet app

[fon1]

I want to make a formula The results are similar to Excel and the formulas in Excel show the following formulas. =sum(d6,d8)/d4
And I've modified it in AppSheet sum(ng[NG],[NG ICM]/[input]) *Notification when entering this formula, SUM function is used incorrectly.

[graham_howe]

There are several reasons for the error, syntax is different in AppSheet. Read the help documentation on SUM()

https://help.appsheet.com/en/articles/2357307-sum