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: ['v', '9511', 'f', 'q']

Output: 9511


Input: Consider Input: ['9869', '7701', 'H', 'o', 'v', '1431', 'O', 'L']

Output: 19001


Input: Consider Input: ['8795', 't', '9399', '7511', '3177', '8561', 'C', '3809', 'W', 'c', '6083', '563', 'e']


Output: 47898