instruction:
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.
question:
['6019', '1467', '3415', '7785']
answer:
18686


question:
['z', 'j', 'M', 'E', '1689', '8413', '2603', 'b', '5101', 'w', 'r']
answer:
17806


question:
['5829', 'W', 'j', 'z', '8333', '8757', 'd', '7077', '8001', '6517', '9049', '381', 'U', 'j', '477', '1889']
answer:

56310