I\'m not sure how to translate the equation into code. Please help if you can, thank you!\n\nInput: list of ints\nOutput: sum of \'powers\' of contiguous subarrays modded by a constant value as an int\n\npowers is defined as:\n![image](https://assets.leetcode.com/users/images/45e713e9-0d07-499a-822b-f4d07c296a0f_1645458568.1015098.png)\n\n\neg input: : [2, 3, 2, 1]\noutput: 69

I\'m not sure how to translate the equation into code. Please help if you can, thank you!\n\nInput: list of ints\nOutput: sum of \'powers\' of contiguous subarr