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: ['B', '9189', '3691', '2869', '1525', 'd', 'H', 'P', '8613', 'b', 'r', '5289', 'V', '6433', '8733', 'K', '8105', '1041', 'U', 'L']

Output: 55488


Input: Consider Input: ['s', '9377', '3663', '1375', 'j', 'L', '7943', '1711', '7409', '9115', '1227', 'I', 'U']

Output: 41820


Input: Consider Input: ['9089', 'f', 'X', 'w', 'U', '4343', '4443', 't', '1011', 'o', 'e', '8743', '5943', 'x']


Output: 33572