Divide by zero error, how do I fix this?

C# novice here, when the int 'max' below is 0 I get a divide by zero error, I can see why this happens but how should I handle this when max is 0? position is also an int. ``` private void SetProgressBar(string text, int position, int max) { try { int percent = (100 * position) / max; //when max is 0 bug hits string txt = text + String.Format(". {0}%", percent); SetStatus(txt); } catch { } } ```