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]: ['8207', '4791', '3925', 'b', 'Z', '8471', '9215', '3117', 'p', '9095', 'h', 'k', 'E', 'h', '6047']
[EX A]: 52868

[EX Q]: ['3565', 'z', '8811', 'z', 'U', '113', 'I', '1307', '135', 'V', 'P', '5183', '2505', '4863', '1113', 'A', '7575', '827', 'B']
[EX A]: 35997

[EX Q]: ['8007', 'M', 'M', 'I', '2905', '1817', '6539', 'g', '2361']
[EX A]:
21629