How to produce a snapshot report

This report was distilled from 210,000 lines of sales reporting on 8 separate spreadsheets. You could do it by copying, pasting and then summarising but it would take you a day.

This uses Power Query and Power Pivot and it takes about 10 minutes.

This is why our company exists. 99% of Excel users can't do this and we can instead do it for you.

Or you could learn for yourself. It only takes about a year part-time.