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.

Input: Consider Input: ['n', 'W', '565', '6625', '903', 'o', '7995', '8339', '5251', 'e', 'a', '1081', '5813', 'o']

Output: 36572


Input: Consider Input: ['c', '7415', '6253', '4477', 't', '9449', '7733', '2325', 'Z', '5413', 'q', 'm', 'R', '8619', '7289', '857', '7273', '7425']

Output: 74528


Input: Consider Input: ['7721', '2263', '4575', '1551', '9541', 'p', '3251', '9971', 'p', '3239', '3443', 'o', '8797', 'z', 'l', '7437']


Output: 61789