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:
['s', '3881', 'l', '5271', '9227', 'Z', '5429', '7691', '6127', '6301', '8533', 'T', '233', 'j', '1685', 'F', 'b', '3797', '6633', '7917']
answer:
72725


question:
['A', '6323', 'T', 'H', 'M', 'S', 'D', 'r', 'v', '8169', '7649', '5149', 'x', '6275']
answer:
33565


question:
['N', 'd', 'B', 'd', '4667', 'Q', '7201', '3811', 'D', '8023', 'k', '1379', '8721', '3527', '6125', 'e', 'n', '2509']
answer:

45963