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.

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

Output: 52798


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

Output: 38460


Input: Consider Input: ['59', '6553', 'u', '9457', '51', 'f', '5799', 'l', 'D', 'I', '6313', 'b', '8449', '7879', 'Z']


Output: 44560