description:
| Returns the number of whole workdays between two dates with custom weekend parameters. |
syntax:
| =NETWORKDAYS.INTL( start_date, end_date, [weekend], [holidays] ) |
required arguments:
| start_date | The start date. |
| end_date | The end date. |
optional arguments:
| [weekend] | For which days of the week should be considered weekends. |
| [holidays] | A list of one or more dates that should be considered non-work days. |
