Sum data by using a query - Microsoft Support
https://support.microsoft.com/en-us/office/sum-data-by-using-a-query-430a669b-e7fd-4c4b-b154-8c8dbbe41c8a
Web ResultSum data by using a Total row. You can add a Total row to a query by opening your query in Datasheet view, adding the row, and then selecting the aggregate function that you want to use, such as Sum, Min, Max, or Avg. The steps in this section explain how to create a basic select query and add a Total row.
DA: 14 PA: 91 MOZ Rank: 28