I have site column with the following formula:

[AmountLeftToPay]/([AmountAssigned]-[AmountReleased])

The problem is the division by zero, sometimes it shows on list items #DIV/0!

So I wanted to do the following:
=IF([AmountAssigned]-[AmountReleased]=0; 0; [AmountLeftToPay]/([AmountAssigned]-[AmountReleased]))

And it shows me the same error in all lists where its used.
is not supported.
/apps/xx/xx/Lists/Budgets : The formula contains a syntax error or is not 
supported.

If I change ; with commas,
The formula contains a syntax error or is not supported.

so I got no clue


Question: Why do marshmallows poof up so huge when put in the microwave?
Answer: Marshmallows expand so much because the water in them becomes steam, and gas takes up a LOT more volume than liquid. Specifically, 1 mL of water becomes ~1.36 LITERS of vapor, before it gets heated further.  That's 1000-fold expansion, before you add additional expansion as the gas is heated.  

Marshmallows don't have all that much water content, but when it's trapped in a stretchy gelatin matrix that holds gas readily, it only takes a bit to blow the whole thing up like a balloon.

You are correct that the gas expansion on its own is insufficient; unless I've badly muddled my calculations, gas expansion from 20C to ~150C (caramelization temperature) will increase the gas volume by under 50%.