How to sort/filter or use a formula

message from =?Utf-8?B?R2Vvcmdl?= on 19 May 2004
I am trying to filter multiple reports for the top 5 selling models in the surrounding counties. I can't find the right expression to use and make this work properly. The models are not limited to any certain number or type so I can filter for number of specific models
 

Archived message: How to sort/filter or use a formula (MS Access Database)
 
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