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: ['1493', 'x', 'h', '31', '3327', '1621', '4529', 'd', '377', 'R', 'X', 'Z', 'G']

SOLUTION: 11378

PROBLEM: ['q', 'N', 'y', '7859', 'u', '2861', '4151', 'Q', 'x']

SOLUTION: 14871

PROBLEM: ['E', 'y']

SOLUTION:
0