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]: ['o', '8089', '2159', '943', '1255', 'w', 'Y', '3723', 'n', '7767', '2209', 'F', 'c', 'J', '5259', '4427', 'n', 'U']
[EX A]: 35831

[EX Q]: ['887', '8133', 'X', '2253', '8461', 'I', '5425', 'Z', 'z', 'r']
[EX A]: 25159

[EX Q]: ['f', '1793', 'k', '2621', '3703', 'X', 'L', 'z', 'F', 'e', 'K', 'w', 'C', 'M', '2847', '5043', 'h', '385', '7699']
[EX A]:
24091