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:
['v', '4119', 'I', '475', 'd', 'L', '909', 'F', 'V', '775', 'k', 'A', '9411', '8383', 'W', '1521', 'z', 'j', '7057', 'I']

Ex Output:
32650


Ex Input:
['r', '2251', 'X', 'H', 'a', '5463', 'g', 'M', '9797', '1581', 'o', 'm', 'v', 'E']

Ex Output:
19092


Ex Input:
['7069', 'I', 'N', 'w', 'Y', '2453', 'w', 'v', 'v', '7781', '6017', 'i', '6375', '1197', 'k', 'h', '1137', 't', '8201', 'L']

Ex Output:

40230