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]: ['z', 'U', '6817', 's', '3731', 'M', 'I', '1095', 'l', '5993', '5207', 'e', 'L', '5361', 'v', 'g', '1963', '4829', '9541', '8261']
[EX A]: 52798

[EX Q]: ['p', 'V', '673', '8483', 'S']
[EX A]: 9156

[EX Q]: ['8417', 'e', '3155', 'q', 'O', '3589', '7003', 'x', '9067', 'J', 'm', '8557', '9305', '973', 'v']
[EX A]:
50066