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: ['q', 't', '4837', 'F', '2367', '1867', '8361', 'm']

Output: 17432


Input: Consider Input: ['2469', 'c', '6931', 'a', '2167', '9493', '9403', '4123', '4949', 'R', 'V', 'h', '315', 'T', '9411', 'M', '1329', '8217', '6105', 'Y']

Output: 64912


Input: Consider Input: ['387', '1235', 'N', 'O']


Output: 1622