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.

['3895', 's', 'j', '7755', 'H', '7941', '4903', 's', '3629', '1183', '1001', '5569', 'q', '4735']
40611

['O', 'K', 's', 'V', '6815', 'c', '9277', 'V', '1783', 'b', 'i', '2045', 'E', 'E', '2035']
21955

['x', '8345']

8345