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: ['z', '447', '9781', 'R', '6083', 'u', '9229', 'Z', 'F', '2437', '9677', 'n', 'G', '6763', '5883', 'B', '9563', '4575']

Output: 64438


Input: Consider Input: ['u', 'i', 'z', 't', '9617', 'd', '3255', 'w', 'S', '3041', '7451']

Output: 23364


Input: Consider Input: ['6095', '4773', 'F', '4725', '9943', '5905', '9793', 'S', 'l', '4541']


Output: 45775