Setting Shipping cost for the rest of the world

Hi,

For the Rest of the world can I set quantity based shipping fee with comma separated?
Example:
1|6,2|9,3|12,4|15,5|18,6|21,7|24,8|27,9|30,10|33,11|36,12|39,13|42,14|45,15|48,16|51,17|54,18|57,19|60,20|63,21|66,22|69,23|72,24|75,25|78,26|81,27|84,28|87,29|90,30|93,31|96,32|99,33|102,34|105,35|108,36|111,37|114,38|117,39|120,40|123,41|126,42|129,43|132,44|135,45|138,46|141,47|144,48|147,49|150,50|153

If no, what is the solution if I have cost for 3 countries and the price for the rest of the world is:
1=6, 2 = 6+3, 3 = 6 + 6….

Thank you,\\Sam

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