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.

['5331', 'f', '2865', '6019', 'U', 'm', 'g', 'n', 'Y', 'A']
14215

['3071', '355', 'e', '9781', 'R', '6833', 's', '2665', 'L', '9551', 'P', '6101', '2955', '4643', 'O', '3327', '2163', '685', '4277', 'B']
56407

['m', '757', '125', '5351', 'v', '6605', 'E', '1381', 'T', 'X', '5331']

19550