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.

['3575', '8877', '3231', 'v', '9083', '317', 'M', '8975', 'x', 'F']
34058

['6577', 'Q', '6865', '7671', 'N']
21113

['s', 'W', 'L', '9975', '3667', '7429', '4157', 'X', 'S', 'a', 'F', '1665', '7343', '2249']

36485