One row per unreadable file, three counts, and a name on every row that needs the customer. The loss is stated in the questions the customer asked, not in files.
The lesson's triage and its fixed denominator, the twin problem, and the check on my own scan are in Lesson 11 Lost 83 Documents in 26 Files. Count the Questions Too, and Keep the Copies.. The docs agent and its 2021 twin are from Lesson 10 Tripled the Window and Accuracy Held at 60%. Add the Cited Doc and the Twin Column..