Warning: Division by zero in C:\Apache24\htdocs\real\ventas\fixcom.php on line 495

Fatal error: Uncaught PDOException: SQLSTATE[42S22]: [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Invalid column name 'NAN'. in C:\Apache24\htdocs\real\ventas\fixcom.php:508 Stack trace: #0 C:\Apache24\htdocs\real\ventas\fixcom.php(508): PDOStatement->execute() #1 {main} thrown in C:\Apache24\htdocs\real\ventas\fixcom.php on line 508