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.

[EX Q]: ['x', 'V', 'g', '5469', 'c', '7873', 'T', 'p', '8109', '5395', 'h', 'z', 'T', '9373']
[EX A]: 36219

[EX Q]: ['901', 'X', 'W', 'D', 'm', 'M', '59', '4855', '6523', 'R', '9781', '8271', '4449', '2221', '8391']
[EX A]: 45451

[EX Q]: ['5741', 'l', '6779', 'n', 'w', 'g', 'q', '3005', 'j', 'p', 'R', 'V', 'y']
[EX A]:
15525