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]: ['V', 'h', '5549', 'K', 's', '8337', 'Y', '497', 'z', 'T', '4467', '6333', 'M', '1573', 'y', 'O', '5499', 's', 't', '6205']
[EX A]: 38460

[EX Q]: ['i', 'o', '1321', 'I', 'W', 'e', '1201', 'I', 'e', 'F', '9841', 'm', '9827', 'q', 'f', 'X', '8261']
[EX A]: 30451

[EX Q]: ['4747', '617']
[EX A]:
5364