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:
['6849', 'I', 'p', 's', 'L', '4757', 'j', 'x', 'm', 'P', '5237', '1105', '9015', '9279', 'Q']

Ex Output:
36242


Ex Input:
['1073', 'i', 'o', 'j', 'O', 'g', 'X', '3261', '5105', '4831', 'J']

Ex Output:
14270


Ex Input:
['Q', '1149', '5013', 'f', 'S', '1813', '8285', 'g', '5451', 'g', '451', 'O', 'c', '6339', '8175']

Ex Output:

36676