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]: ['2013', 'S', 's', '9353', 'b', 'u', '6687', '5429', '3545', '7269']
[A]: 34296


[Q]: ['V', '2633', '3269', 'r', 'Q', '3517', '2571', 'G', '4105', 'm', 'z', 'B', 'A']
[A]: 16095


[Q]: ['6247', '3319', 's', '3819', '9869', '1803', 'k', '3747', '7059', '3249', '4127', '9423', 'h', '3071']
[A]:
55733