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.

['7293', '2619', '2459', '3829', 'J', 'c', 'a', 'a', '311', 'x', 'r', '6123', '2847', '4809']
30290

['q', 't', '4837', 'F', '2367', '1867', '8361', 'm']
17432

['a', '7837', 't', '877', 'Y', 'A', 'g', 'h', '6447', 'T', '303', 'd', 'C', '2953', '9219', '7457']

35093