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:
['a', 'j', 'v', '619', 't', 'a', '5777', 'x', 'R', 'P', '8897', 'j']
answer:
15293


question:
['1965', '8127', 'x', '4981', '8077', 'O', '467', '701', 'V', 'm', 'y', '5989', '123', 't', '4019', 'j', '1827', '8799']
answer:
45075


question:
['1815', 'F', '1649', 'b', 'I', 'U', 'R', '3077', '7423', '5493', 'S', '6383', 'X', 'g', 'm', '8927']
answer:

34767