In this task, you are given an input list A. You need to find all the elements of the list that are numbers and calculate their sum.

Q: ['z', 'T', 'Y', 's', 'j', '585', '7833', '2601', '8057', 'S', '7037', '5799', '4477', '5377', '6301', 'P', 'm', '9431', 'f']

A: 57498
****
Q: ['R', 'I', 'f', 'K', 'p', '8579', 'e', '1223', 'I', 'K', '8311', '2147', '4241', 'z', '6671', 'r']

A: 31172
****
Q: ['1753', '55', '3165', '4929', '5509', '3369', '917', '8015', '3997', 'W', '317', 'N', 'O', 'o', 'M', 'Q']

A:
32026
****