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.

['t', 'Q', '5189', 'g', 'c', '4685', '5309', 'W', '6729', '2843']
24755

['E', 'X', 'C', 'v', '2803', 'g', 'b', '763']
3566

['T', '9787', 's', 'd', 'x', 'x', '351', '1531', '9515', 'V', '3413']

24597