Make a useful bug report.

A few clear details make a calculation issue much easier to reproduce.

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  1. Name the tool and copy the entered values.
  2. State the result you expected and how you calculated it.
  3. Include the actual result and any error message.
  4. Optionally include browser and device details.

Before reporting

Check the input definitions and FAQ. Export a project if that helps reproduce the issue, but remove private notes. Do not send passwords, payment information, or identity documents.