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.

[EX Q]: ['2625', '1611', 'E', '4507', '3013', '1569', 'M', '2607', '1111', 'W']
[EX A]: 17043

[EX Q]: ['2325', '3259', '1947', '8065', 'H', '2329', 'h', 'l', 'k', 'R']
[EX A]: 17925

[EX Q]: ['8907', 't', '9715', '4627', 't', '1949', '7979', '9763', 'c', '583', 'z', '4095', 'S', 'h', 'r']
[EX A]:
47618