Hard to know if you're doing it wrong, since you don't say what you're
trying to do.

Mod is an operator, so it only makes sense in an assignment statement.
For instance:

a = 26 Mod 3

returns 2 to the variable a.

A bare

26 Mod 3

doesn't make sense - it's like putting the number 2 as a statement.

In article ,
DMB wrote:

this formula is giving me an error. I need the remainder. Am I doing this
wrong?

26 Mod 3