Sharing
Calcs can be shared with a permalink (instacalc.com/12345
) or added to a website with an embed code.
When a user opens a shared calc, they can make local changes (to play with the numbers), but the original calc is unchanged.
Demo
<iframe src="https://instacalc.com/42214/embed" width="450" height="350" frameborder="0"></iframe>