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:
['773', 'e', '4451', 'S', 'I', 'r', 'e', 'V', 'Q', 'g', 'J', 'L', '7655', 'O']
answer:
12879


question:
['J', 'm', '1255', 'S']
answer:
1255


question:
['4821', 'Z', '8855', '5739', 'U', 'e', '7349', '9835', 'b']
answer:

36599