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: ['6051', '5303', '1509', '2797', 'Z', '4777', '721', '8563', 'K', '63', '9115', 'd', '7305', '9743', '7409']

Output: 63356


Input: Consider Input: ['n', 'm', 'Y', 'v']

Output: 0


Input: Consider Input: ['5087', '6429', 't', 'Q', '269', 'y', '8461', '6059']


Output: 26305