()               Parentheses                                         Operator

  (argument1 operator argument2) operator argument3

     Parentheses are used to override the normal order of operator precedence
     (see the menu item Operator Precedence).

     You use parentheses to indicate which operator expression to evaluate
     first. For example, (2 + 7) * 2 = 18, but 2 + 7 * 2 = 16.