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: ['61', '5695', 'u', '253', 'n', '1035', 'd', '3017']

Output: 10061


Input: Consider Input: ['5289', '1701', '5925', '7973', 'F', 'V', 'y', '5903', 'i']

Output: 26791


Input: Consider Input: ['8125', 't', '6783', 'e', '2839']


Output: 17747