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]: ['6563', 'R', 'M', 'B', 'b', 'E', '9911', '7327', 'J', '7389', 'w', 'b', 'c', '1527', 'K', 'r', '5441', '6823', '8455']
[A]: 53436


[Q]: ['8743', 'Y', 'O', '8265', '1029', '5689', 'F', 'j', 'Z', 'i', 'S', '1285', '737']
[A]: 25748


[Q]: ['o', 'u', '5661', 'o', 'D', 'X', 'L', 'z', 'g', '5989', '3303', 'k', '8967', 'w']
[A]:
23920