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]: ['1073', 'i', 'o', 'j', 'O', 'g', 'X', '3261', '5105', '4831', 'J']
[EX A]: 14270

[EX Q]: ['c', '7415', '6253', '4477', 't', '9449', '7733', '2325', 'Z', '5413', 'q', 'm', 'R', '8619', '7289', '857', '7273', '7425']
[EX A]: 74528

[EX Q]: ['6053', 'Z', 'N', '3167', '3549', 't', 'q', '6091', '9721', '1575', '6087', 'k', '8905', 'i', '6359', '5077']
[EX A]:
56584