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]: ['3723', 'v', 'j', 'e', '2017', 'd', '4211', '2079']
[A]: 12030


[Q]: ['d', 'b', 'W', '3201', 'C', 'o', '5187', '9723', '8177', 'F', '6703', 'U', '1393', '1035', '3507', '5993', '3857', 'r', 'C', 'j']
[A]: 48776


[Q]: ['t', '8881', 'J', 'C', 'Z', 'F', 'U', '8595', 'y', '6845', 'c', '3183', '5489', '8967', '3993', '7989', '1017', 'G', 'h', '1723']
[A]:
56682