Below is a sample of the values below. Notice that 3 entries begin with "RD". How can I find the MAX value that begins with "RD". The RD-values will always end with 4 digits.
The formula needs to work even if the column is sorted in different ways. Thanks for your time.
20586
RD0001
20588
20589
20590
20591
20592
20593
20594
20595
RD0002
20597
20598
20599
20600
RD0003
20602
20603
20604
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