### Excel Magic Trick 333: #DIV/0! Error IF & ISERROR or IFERROR functions

IF & ISERROR or IFERROR functions for errors? See how to fix errors with the Excel 2007 IFERROR and the Excel 2003 IF & ISERROR functions. See how to fix a divide by zero error. See the SUMPRODUCT function used to calculate monthly costs per contacts. IS functions, IF functions, Logical Test. Formula Errors.

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