TASK DEFINITION: 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.
PROBLEM: ['e', 'T', 'O', 'q', '5511', 'G', 'm', 'E', '2153', 'O', '1139', '5097', 'n', '5653', 'v']

SOLUTION: 19553

PROBLEM: ['E', 'v', 'l', 'c', 'g', '3929', 'q', 'j']

SOLUTION: 3929

PROBLEM: ['M', 'k', '3587', 'o', '6087', 'e', 'V', '5627', 'X']

SOLUTION:
15301