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.

['v', '4119', 'I', '475', 'd', 'L', '909', 'F', 'V', '775', 'k', 'A', '9411', '8383', 'W', '1521', 'z', 'j', '7057', 'I']
32650

['5749', 'l', '3297', '8913', '4625', 'M', 'X', 'g', '3143', 'i', '8369', '6101', 'w', '3683', '3891', '1399', '9105', '6923', 'K']
65198

['R', 'W', '2563', '5705', 'K', 'W', '4511', '99', 'X', 'z', 'x', 'X']

12878