The divmod() method in python takes two numbers and returns a pair of numbers consisting of their quotient and remainder
Output-- (3, 1) where 3 is quotient and 1 remainder.
This is Queation where divmod function used link--
Here problem solution
def addToArrayForm(self, A, K):
for i in range(len(A) - 1, -1, -1):
K, A[i] = divmod(A[i] + K, 10)
return [int(i) for i in str(K)] + A if K else A