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

['8591', 'J', 'l', 'l', '7023', 'N', 'n']
15614

['6321', 'h', '1025', '9821', 'n', 'j', 'W', '8509', 'Z', 'H', 'E', 'c', '3607', 'L']

29283