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Timeger 0.3.1.1-signed.1-signed Requires Restart
Automatically adds/subtracts/multiplies/divides Time entries in a text field.
This add-on has been marked as experimental by its developers
This add-on is not compatible with your version of Firefox because of the following:
About this Add-on
(17:47 - 07:58)/2
Not anymore. Just fill it in a text field and we will do the rest.
Check documentation page for more use cases. Ping me if you need more formulas.