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]: ['n', '6729', 'p', 'D', 'o', '1213', 'e', '6951', '2341', '9997', 'e', 'M', 'x', 'R']
[A]: 27231


[Q]: ['9445', '7291', 'r', 'g', '1175', '7823', '5507', 'j', '7249', '6335', '3853', 'b', 'u', 'S', '365', 'Z', '7489', 'S', 'W', 'e']
[A]: 56532


[Q]: ['Y', 'G', '1933', '8485', 'n', '9611', 'C', '8641', 'm', '7649', '8595', 'h', '7863', 'B', 'I', '9185', 'H', '8197']
[A]:
70159