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]: ['k', '4991', '7289', '4355', 'I', '8415', '5175', '5329', 'G', 'a', '7193', 't', '8821', 'j', '7239', '405', 'y', 'O', '9881', 'w']
[A]: 69093


[Q]: ['F', 'v', 'G', '6023', 'M', 'Q', 'A', '8477', '2079', 'A', '813', 'C', '3479', 'G', '1977', '5569', '8749', 'Y']
[A]: 37166


[Q]: ['6287', 'l', '7763', '5545', '413', 'A', '5319', 'G', '9909', '3453', '4197', '4655', '1853', '6845', '4277', 'd']
[A]:
60516