1837. Sum of Digits in Base K

Given an integer n (in base 10) and a base k, return the sum of the digits of n after converting n from base 10 to base k. After converting, each digit should be interpreted as a base 10 number, and the sum should be returned in base 10. Example 1: Input: n = 34, k = 6 Output: 9 Explanation: 34 (base 10) expressed in base 6 is 54. 5 + 4 = 9. Example 2: Input: n = 10, k = 10 Output: 1 Explan