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Reporting a wrong answer
If a tool gives a result you think is wrong, please include the exact input you used (copy and paste it) and the answer you expected. That makes it much quicker to find and fix the problem.
Suggesting a tool
Tell us what you calculate by hand or in a spreadsheet today, and what you'd want the tool to show. Ideas from working engineers shape what gets built next.
We usually reply within a few working days.