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:
['3723', 'v', 'j', 'e', '2017', 'd', '4211', '2079']
answer:
12030


question:
['6551', 'm', '3941', 'F', 'K', 'u', '7981', '9581', 'X', 'M', 'N', 'e', 'G', 'i']
answer:
28054


question:
['4629', '9771', 'x', 'M', 'E', 'P', 'P', '4461', 'K', 'X', '7737', 'M', 'F', '1505']
answer:

28103