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:
['6645', 'k', '4879', 'N', '113', 'L', 'x', '8365', 'v', 'A']
answer:
20002


question:
['z', '447', '9781', 'R', '6083', 'u', '9229', 'Z', 'F', '2437', '9677', 'n', 'G', '6763', '5883', 'B', '9563', '4575']
answer:
64438


question:
['7261', '9375', '795', 'R', 'P', 'm', 'c', '9571', '1433', '5427', '7059', 'f', '757', '1701', '5189']
answer:

48568