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: ['3051', 'Z', 'q', 'u', 'x', '2747', 'e', 'B', '4225', 'Q', 'R', '4629', 'F']

Output: 14652


Input: Consider Input: ['3121', 'j']

Output: 3121


Input: Consider Input: ['8379', 'v', 'p', '4311', 'p', '6049', '6433', 'U', '7785', 'K', '8395', '9667', 'l']


Output: 51019