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

[EX Q]: ['b', 'i', '7807', 'g', '1611', '6733', 'V', '561', 'C', '8575', 's', 'E', '8129', 'F']
[EX A]: 33416

[EX Q]: ['F', 't', 'F', '171', '4403', 'Z', '8019', 'i', 'X', 'R', 'a', '1859', '1893', 'Y', 'b']
[EX A]:
16345