Port forwarding on Route 10

Is there an easy way to input many ports to be forwarded?
I need to forward a block of port such as 3240 to 3259.
Could you give me some hint how to insert blocks of ports?

I seems like, if you are adding a block of ports, you can do so using a dash in between like so:

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Is there a way to add a list of ports?

for example: 80,443,8443,8080

OK thank you for the information.
Can I also write :3240-3259,3270 if I have a block and one additional port to forward?
This would be really a great help.