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.

['f', '6703', 'c', 'c', 'l', '2511', '6507', 'b', '9727', 'l', '1251', 'I', '5231', '91', 'L', 'M', 'd']
32021

['4161', 'E']
4161

['9509', 't', 'z', '7469', 'p', 'l', '6379', 'U', '5169', '239', 'd', '3693', 'G', 'V', '6545']

39003