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: ['1147', 'f']

Output: 1147


Input: Consider Input: ['C', '3133', '2183', '5793', '9305', 'd', 'g', '6501']

Output: 26915


Input: Consider Input: ['T', '9817', '6231', '6319', 'N', '1723', '6497', '1817', 'v', 'W']


Output: 32404