Hey there! I have to make a very simple formula but having problems on how to write it correctly

I have two date fields (arrival, depature)

I have a Total days field ( calculates the date difference) -working

I have a price field that shows price for the spesific amount of days I have the formula:

IF({Dager} = 1, "590, ") &

IF({Dager} = 2, "690, ") &

IF({Dager} = 3, "840, ") &

and so on all the way to 21 days ( everything here is working fine)

BUT, after day number 21, the price is gonna add 20 for each day.

Itâ€™s going to be something like this:

If({dager)>21, ({dager},-21*(20),1490, ")

Example with 29 days - If({dager)>21, ({29},-21*(20),1490, ")

- Here the days over 21 is 8. Then multiply 8 by 20, then + 1490 (price for 21 days)

And the total is then 1650, which is correct.

When I do this in the calculator I get the correct price. When I did this in Caspio Cloud, it also worked. So my problem is just how to put in all the () and , and â€śâ€ť or {} at the right places for this!

If someone have the time to read and look trough this I would be really happy

Thank you

Andreas.