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.

['X', 'u', 'B', '269', '9089', 'M', '5175', 'K']
14533

['w', 'V', '3359', '8847', '7551', '2481', 'Y', 'j', 'L', 'G', '7905', 'v', '4141', '2229', 'k', 'H', '3517', '3885', '3665', 'O']
47580

['L', 'O', 'd', '761', 'W', '4433', 'I', '1727', 'u', '1973', 'B', 'F', '5195', '9735']

23824