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 Input:
['y', 'R', 'b', 'v', 'm', 'H', '9903', '8689', 'D', '1023', 'a', '233', '1833', 'o', 'n', 'm', '5531']

Ex Output:
27212


Ex Input:
['q', 't', '4837', 'F', '2367', '1867', '8361', 'm']

Ex Output:
17432


Ex Input:
['A', '8183', '1489', '6995', 'M', 'G', '3247', 'o', '7057', 'V', 'b', '49', 'y']

Ex Output:

27020