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: ['4159', 'H', 'h', 'W', 'w', 'i', 'G', 'l', 'j', '5467', '9219', 'j', 'q', 'n', '5465', '6197', 'J', 'y']

Output: 30507


Input: Consider Input: ['2775', '7405', 'F', 'D', '9025', '827', 'e', 'j', 's', 'e', 'Q', '1137', 'G']

Output: 21169


Input: Consider Input: ['7827', 'j', 'R', '8309', 'w', '2575', '147', 'f', '9465', 'W', 'y', 'X', 'g', 'G', '7257', 'N', '6383']


Output: 41963