Troubleshoot Google Sheet Data Errors

I have a Google Sheet that isn't accurately updating the numbers in some cells. I'm not sure what's causing this issue

Requirements:
- Troubleshoot and fix the Google Sheet to identify the root cause of the incorrect or blank data.
- Fix the formula or configuration that is causing the issue.
- Ensure that the sheet updates correctly when numbers are entered manually.

Ideal Skills:
- Strong proficiency in Google Sheets and formulas.
- Experience in troubleshooting and fixing data discrepancies.
- Attention to detail to spot and correct any issues.