The sum of the first 10th term of an a.p is 255,the sum of the first 20 term is 1010.find the next 2020 term of the progression

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10/2[2a+(10-1)d=255 20/2[2a+(20-1)d=1010. So a=3, and d=5. Then the 2020 term is 3+(2020-1)5.And the answer is 10098.
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What of the next 20 terms
The sum of the first ten terms of 07 an AP is 225. Find the sum of the next twenty terms of the progression given that the sum of the first twenty terms of the progression is 10