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.

['6255', '8457', 'V', 'z', '4405', 'X', '9267', '5329', 'I']
33713

['2625', '1611', 'E', '4507', '3013', '1569', 'M', '2607', '1111', 'W']
17043

['4219', 'J', 't', 'U', 'y', '6115', '9013', '2419']

21766