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The project is to build a system in php/mysql + jquery like google excel docs.
See screenshot attached.
We need to save entries filled to db and edit them also.
We need to add many lines as needed.
We need to be able to do mathematical (simple ones) checks to update average and sum values on some columns (on the fly, based on the values in the cells).
The system should be multi-users: many users have their own excel sheet.
Some columns will be predefined: instead of filling an input, we need to provide a dropdown.
I think this project can be done in 2/3 days.