Here 100 is the total pages of report and 5 indicating the current / active page of the report.
Its a very simple. In any section of report create two integer control.
For Page Number: go to propety of the a integer control and set DataMethod property with "Page".
For Total Number Pages: go to propety of the another integer control and set DataMethod property with "PagesTotal".
Run the report and see the effect.... :)