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.

[EX Q]: ['o', 'J', 'B', '7765', '7781', '5513', '8721', 'u', '9557', 'C', 'A', '1281', '6565', 'H', '5559', '1695', '7577']
[EX A]: 62014

[EX Q]: ['887', '8133', 'X', '2253', '8461', 'I', '5425', 'Z', 'z', 'r']
[EX A]: 25159

[EX Q]: ['v', '8489', '7871', '3273']
[EX A]:
19633