FINTRAC's report on Underground Banking Schemes in Canada is exactly 731 KB.
Could you please clarify if you are referring to one of these specific documents, the historical Unit 731, or if you need a report digital file sizes and storage units? (731 KB)
For instance, the Healthy Homes Standards Checklist in New Zealand is a 731 KB PDF. FINTRAC's report on Underground Banking Schemes in Canada
The House of Commons briefing on Local Enterprise Partnerships is also a 731 KB PDF. The House of Commons briefing on Local Enterprise
Search results suggest this specific file size often appears in the following contexts:
If you meant "Unit 731" (the Imperial Japanese Army's biological warfare unit), this is a historical research topic.
Once you specify the subject, I can draft a report with the appropriate structure (e.g., Executive Summary, Findings, and Recommendations). Healthy homes standards – what a landlord needs to know