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.

['e', '6633', '131', '7459', '3733']
17956

['t', 'v', 'B', 'Y']
0

['H', '2235', 'b', 'l', 'J', 'v', 'V', '9807', '213', '2449', '537', '5919', '7115', 'V', 'w', 'a', 'x', '7615', '1771']

37661