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]: ['Q', 'v', 't', '223', 'm', 'l', 'c', 'M', 'b', '2227', 'P', 'e', 'n', 'f', 'S', '2205', '3517', '5545']
[A]: 13717


[Q]: ['R', '9751', '4367', 'l', 'N', '5125', '8751', '7507', 'y', 'K', '6127']
[A]: 41628


[Q]: ['3941', 'J', '3879', 'W', 'M', 'y', '3661', 'W', 'c', 'N', 'D', '109']
[A]:
11590