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


question:
['5331', 'f', '2865', '6019', 'U', 'm', 'g', 'n', 'Y', 'A']
answer:
14215


question:
['L', '6217', 'q', 't', '9553', 'n', 'c', 'n', '7863', 's', 'r', 'X', 'f', 'w', '6273', 'd', '1791', '6209', '8843']
answer:

46749