[10 pts] Write the function sumDigits(n) which takes in a positive integer and sums its digits. Hint: Using floor division (I/) and modulo(%) could be helpful here. Example: sumDigits(1001) will return 2 since 1+0+0+1 = 2 sumDigits(59872) will return 31 since 5+9+8+7+2 = 31