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', 'c', 'E', 'Q', '1839', 'g', 'X', 'c', '291', 'c', 'w', 'e', '5957', 'X', '6471', 'A', '8359', 'y', '3611', '5417']
[A]: 31945


[Q]: ['X', 'u', 'B', '269', '9089', 'M', '5175', 'K']
[A]: 14533


[Q]: ['3853', 'B', 'r', '9331', '9743', '733', '5663', 'z', '5339', '2841', 'r', '3001']
[A]:
40504