Calculating number for a specific string length

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Provide example input data ecataly as it is on the source system 

Also provide the example desired output, with a clear step-by-step descriptions of the calculations and process flow.

Remove any unneeded columns which may cause confussion.

Rename columns to user friendly names.

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Take time and care to use the same table and field names in the input, output and description so we can understand your problem and help you.
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