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]: ['3071', '355', 'e', '9781', 'R', '6833', 's', '2665', 'L', '9551', 'P', '6101', '2955', '4643', 'O', '3327', '2163', '685', '4277', 'B']
[A]: 56407


[Q]: ['g', '5301']
[A]: 5301


[Q]: ['7321', '6235', 'e', '1537', 'G', 'D', 'G', '7151', '8035', '8039', 'Y', 'C', '6577', 'q', '7187', '4193', '987', 'E', '4721', 'S']
[A]:
61983