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.

Q: ['q', '6631', 'b', '4207', '7523', '9853', '9203', 'P', '5029', 'b', '2319', '4717', '2485']

A: 51967
****
Q: ['n', '6729', 'p', 'D', 'o', '1213', 'e', '6951', '2341', '9997', 'e', 'M', 'x', 'R']

A: 27231
****
Q: ['u', 'u', '9087', '6249', 'w', '8859', 'V', 'S', 'p', '5351', 'W', '4377', 'T']

A:
33923
****