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: ['3557', '3345', '307', '9791', '1897', 'O']

A: 18897
****
Q: ['h', 'a', '1645', '2391', '759', '519', '3331', '2831', '3427', '9893', 'u', 'J', '7391', '8379', 'V']

A: 40566
****
Q: ['7085', 'W', 'T', '2563', '285', 'I', 'O', 'G', 'X', '8463', 'J', 'q', '6595', '8027', '4111', 'M', 'B']

A:
37129
****