Teaching example. Import dealership-sales.csv as DemoSales in Power BI.
These measures support the same region/month filters as the browser example.

Total Units = SUM(DemoSales[units])

Revenue = SUMX(DemoSales, DemoSales[units] * DemoSales[unit_price])

Average Vehicle Value = DIVIDE([Revenue], [Total Units])

This browser walkthrough is not a Power BI report file or an actual business result.