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.

['8353', 'f', '1799', '6985', '2975', 'J', '9105', 'f', 'v', 'C', 'V', '9327', '3015', 'e', 'h', '439', '4969', 'c']
46967

['M', 'H', 'l', 'Y', '3811', '1953', '5869', 'U']
11633

['4939', '895', '6011', '4219', 's', 'J', 'F', 'p', 'o', '7477', 'R', '8629', '8297', '9129', 'z', '2303', 'p', '4695', '7573']

64167