I wish to create an Excel-like spreadsheet which gets a few simple inputs (let's say 3 cells with the input of a number), where then a fourth cell will calculate the sum of the square of the three numbers from cells 1 till 3.
After creation, I wish to embed this into a website, where people will be able to only edit cells 1 till 3 (but not cell 4).
Is that possible to do? (In Google docs or any other service?)
Thanks