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


[Q]: ['V', 'h', '5549', 'K', 's', '8337', 'Y', '497', 'z', 'T', '4467', '6333', 'M', '1573', 'y', 'O', '5499', 's', 't', '6205']
[A]: 38460


[Q]: ['655', '9167', 'W', 'D', '7489', 's', 'G', '5731', 'p', 'n', '2829', '4355', '2221', '9251', 'R', '8259', '619', 'v', '2655', 'a']
[A]:
53231