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]: ['i', 'w', '8117', '2823', 'C', 'x', 'w', '5959', 'g', 'e', 'L', 'V', 'i', 'w', 'n']
[EX A]: 16899

[EX Q]: ['x', 'd', '5121', 'I', '6737', '3789', '6167', 'C', '8947', 'k', '4715', '1885', 'H', 'B', '5685', 'S', '4615', 's', '7709']
[EX A]: 55370

[EX Q]: ['8027', '2177', 's', '3693', 'w', '1447', '4653', '2737', 'm', 'K', '4401', '4543', '7099', 'u', '4841', 'p', 'J', 'x', 'h']
[EX A]:
43618